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Harmony | Elegant Bikini Set

Regular price $169.99 Sale price $84.99 AUD
Save $85.00

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Ordered Before 23:00 = Shipped Today

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| 15,000+ Happy customers
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UPDATE: Due to high demand during our Pre Halloween Sale, only 7 units are still available at the current price!

Harmony | Elegant Bikini Set

Make a statement with the Harmony Elegant Bikini Set, a perfect blend of sophistication and modern style. Featuring bold contrasts and chic button details, this bikini set offers a refined yet eye-catching look for any beach or poolside occasion. Designed for both comfort and confidence, it’s a must-have addition to your swimwear collection.

Why You'll Love It:

  • Chic Button Detail: The stylish front-button accent adds a unique and fashionable touch to your beachwear.
  • Striking Colour Contrast: A bold mix of colours enhances the design, ensuring a standout look wherever you go.
  • Flattering & Supportive Fit: Designed to provide comfort and confidence, with a structured cut that enhances your natural silhouette.
  • Versatile & Stylish: Perfect for relaxing by the pool or enjoying an active day at the beach, offering both elegance and functionality.
  • Durable & Long-Lasting: Crafted to maintain its shape and vibrant colours, ensuring you can enjoy it season after season.

The Harmony Elegant Bikini Set is the ideal choice for those who love a blend of timeless elegance and modern design. Elevate your swimwear collection with this stunning set and enjoy effortless style under the sun.

Shipping & Returns

  • Free Express shipping on AUS orders over $150
  • International shipping & duties charges calculated at checkout
  • Carbon-Neutral Shipping
  • All of our packaging is plastic-free and recyclable. If you have curbside recycling in your area, you should be able to pop all of our packaging in the bin, but you can use How2Recycle to double check!

For more info on shipping, returns, & international orders swing by our FAQs

Free Express Shipping
Free Express Shipping for orders over $150 AUD*

Duties & Taxes
All Duties and Taxes are calculated and paid at checkout

30 day returns
We hope you love your new purchase! If it’s not quite right, don’t worry - eligible items can be returned within 30 days.

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The Story Behind the Scenes

our story

Born in Bondi, Sierra Sydney began as a small coastal idea — a brother and sister creating timeless, effortless pieces inspired by the Australian summer. What started with beach photoshoots and local drops has grown into a brand loved nationwide and stocked in beautiful boutiques like Muse Bali.

From Bondi to Bali, our mission remains the same: to design pieces that celebrate confidence, freedom, and effortless femininity.

Muse bingin 📍
Jl. Pantai Bingin, Pecatu 80364, Bali, Indonesia

Muse Pererenan 📍
Jl. Pantai Pererenan No.116, Pererenan, Kec. Mengwi, Kabupaten Badung, Bali 80351, Indonesia

Phenomena Bingin 📍
Jl. Pantai Bingin No.11, Pecatu, Kec. Kuta Sel., Kabupaten Badung, Bali 80361, Indonesia

Or if you can create it a nicer way 

Make all the 50% off on the store now 60% off

MORE THAN

5000+ HAPPY CUSTOMERS

We stand for empowering women, boosting their confidence, and helping them shine—no matter their shape or size.

Our customers tell it better than we do!

Excellent

4.7

/ 5

Jessica M

“Sierra Sydney is my new go-to! The fabrics feel so luxurious and everything fits perfectly. I’ve already placed my second order—obsessed!” “Sierra Sydney is my new go-to! The fabrics feel so luxurious and everything fits perfectly. I’ve already placed my second order—obsessed!” “Sierra Sydney is my new go-to! The fabrics feel so luxurious and everything fits perfectly. I’ve already placed my second order—obsessed!”

Emily R

“Absolutely stunning pieces! I wore one of their dresses to an event and got compliments all night. The quality and design are next level.” “Absolutely stunning pieces! I wore one of their dresses to an event and got compliments all night. The quality and design are next level.” “Absolutely stunning pieces! I wore one of their dresses to an event and got compliments all night. The quality and design are next level.”

Chloe T

“So impressed with the fast shipping and gorgeous packaging. You can tell this brand truly cares about the details. Five stars!” “So impressed with the fast shipping and gorgeous packaging. You can tell this brand truly cares about the details. Five stars!” “So impressed with the fast shipping and gorgeous packaging. You can tell this brand truly cares about the details. Five stars!”

Isabella L

“I’ve tried so many boutiques and Sierra Sydney is by far the best. The clothes are stylish, flattering, and such amazing quality. Highly recommend!” “I’ve tried so many boutiques and Sierra Sydney is by far the best. The clothes are stylish, flattering, and such amazing quality. Highly recommend!” “I’ve tried so many boutiques and Sierra Sydney is by far the best. The clothes are stylish, flattering, and such amazing quality. Highly recommend!”

Olivia B

I was initially hesitant to switch from my usual brand to this new one, but I'm so glad I did! This product has exceeded my expectations. It's not only affordable but also incredibly efficient. The quality is top-notch, and it's user-friendly. I was initially hesitant to switch from my usual brand to this new one, but I'm so glad I did! This product has exceeded my expectations. It's not only affordable but also incredibly efficient. The quality is top-notch, and it's user-friendly. I was initially hesitant to switch from my usual brand to this new one, but I'm so glad I did! This product has exceeded my expectations. It's not only affordable but also incredibly efficient. The quality is top-notch, and it's user-friendly.

Maddie S

“The customer service was amazing. They helped me choose the right size and it fits like it was custom made. I’m genuinely blown away by this brand!” “The customer service was amazing. They helped me choose the right size and it fits like it was custom made. I’m genuinely blown away by this brand!” “The customer service was amazing. They helped me choose the right size and it fits like it was custom made. I’m genuinely blown away by this brand!”

Jessica M

“Sierra Sydney is my new go-to! The fabrics feel so luxurious and everything fits perfectly. I’ve already placed my second order—obsessed!” “Sierra Sydney is my new go-to! The fabrics feel so luxurious and everything fits perfectly. I’ve already placed my second order—obsessed!” “Sierra Sydney is my new go-to! The fabrics feel so luxurious and everything fits perfectly. I’ve already placed my second order—obsessed!”

Emily R

“Absolutely stunning pieces! I wore one of their dresses to an event and got compliments all night. The quality and design are next level.” “Absolutely stunning pieces! I wore one of their dresses to an event and got compliments all night. The quality and design are next level.” “Absolutely stunning pieces! I wore one of their dresses to an event and got compliments all night. The quality and design are next level.”

Chloe T

“So impressed with the fast shipping and gorgeous packaging. You can tell this brand truly cares about the details. Five stars!” “So impressed with the fast shipping and gorgeous packaging. You can tell this brand truly cares about the details. Five stars!” “So impressed with the fast shipping and gorgeous packaging. You can tell this brand truly cares about the details. Five stars!”

Isabella L

“I’ve tried so many boutiques and Sierra Sydney is by far the best. The clothes are stylish, flattering, and such amazing quality. Highly recommend!” “I’ve tried so many boutiques and Sierra Sydney is by far the best. The clothes are stylish, flattering, and such amazing quality. Highly recommend!” “I’ve tried so many boutiques and Sierra Sydney is by far the best. The clothes are stylish, flattering, and such amazing quality. Highly recommend!”

Olivia B

I was initially hesitant to switch from my usual brand to this new one, but I'm so glad I did! This product has exceeded my expectations. It's not only affordable but also incredibly efficient. The quality is top-notch, and it's user-friendly. I was initially hesitant to switch from my usual brand to this new one, but I'm so glad I did! This product has exceeded my expectations. It's not only affordable but also incredibly efficient. The quality is top-notch, and it's user-friendly. I was initially hesitant to switch from my usual brand to this new one, but I'm so glad I did! This product has exceeded my expectations. It's not only affordable but also incredibly efficient. The quality is top-notch, and it's user-friendly.

Maddie S

“The customer service was amazing. They helped me choose the right size and it fits like it was custom made. I’m genuinely blown away by this brand!” “The customer service was amazing. They helped me choose the right size and it fits like it was custom made. I’m genuinely blown away by this brand!” “The customer service was amazing. They helped me choose the right size and it fits like it was custom made. I’m genuinely blown away by this brand!”

Jessica M

“Sierra Sydney is my new go-to! The fabrics feel so luxurious and everything fits perfectly. I’ve already placed my second order—obsessed!” “Sierra Sydney is my new go-to! The fabrics feel so luxurious and everything fits perfectly. I’ve already placed my second order—obsessed!” “Sierra Sydney is my new go-to! The fabrics feel so luxurious and everything fits perfectly. I’ve already placed my second order—obsessed!”

Emily R

“Absolutely stunning pieces! I wore one of their dresses to an event and got compliments all night. The quality and design are next level.” “Absolutely stunning pieces! I wore one of their dresses to an event and got compliments all night. The quality and design are next level.” “Absolutely stunning pieces! I wore one of their dresses to an event and got compliments all night. The quality and design are next level.”

Chloe T

“So impressed with the fast shipping and gorgeous packaging. You can tell this brand truly cares about the details. Five stars!” “So impressed with the fast shipping and gorgeous packaging. You can tell this brand truly cares about the details. Five stars!” “So impressed with the fast shipping and gorgeous packaging. You can tell this brand truly cares about the details. Five stars!”

Isabella L

“I’ve tried so many boutiques and Sierra Sydney is by far the best. The clothes are stylish, flattering, and such amazing quality. Highly recommend!” “I’ve tried so many boutiques and Sierra Sydney is by far the best. The clothes are stylish, flattering, and such amazing quality. Highly recommend!” “I’ve tried so many boutiques and Sierra Sydney is by far the best. The clothes are stylish, flattering, and such amazing quality. Highly recommend!”

Olivia B

I was initially hesitant to switch from my usual brand to this new one, but I'm so glad I did! This product has exceeded my expectations. It's not only affordable but also incredibly efficient. The quality is top-notch, and it's user-friendly. I was initially hesitant to switch from my usual brand to this new one, but I'm so glad I did! This product has exceeded my expectations. It's not only affordable but also incredibly efficient. The quality is top-notch, and it's user-friendly. I was initially hesitant to switch from my usual brand to this new one, but I'm so glad I did! This product has exceeded my expectations. It's not only affordable but also incredibly efficient. The quality is top-notch, and it's user-friendly.

Maddie S

“The customer service was amazing. They helped me choose the right size and it fits like it was custom made. I’m genuinely blown away by this brand!” “The customer service was amazing. They helped me choose the right size and it fits like it was custom made. I’m genuinely blown away by this brand!” “The customer service was amazing. They helped me choose the right size and it fits like it was custom made. I’m genuinely blown away by this brand!”

Jessica M

“Sierra Sydney is my new go-to! The fabrics feel so luxurious and everything fits perfectly. I’ve already placed my second order—obsessed!” “Sierra Sydney is my new go-to! The fabrics feel so luxurious and everything fits perfectly. I’ve already placed my second order—obsessed!” “Sierra Sydney is my new go-to! The fabrics feel so luxurious and everything fits perfectly. I’ve already placed my second order—obsessed!”

Emily R

“Absolutely stunning pieces! I wore one of their dresses to an event and got compliments all night. The quality and design are next level.” “Absolutely stunning pieces! I wore one of their dresses to an event and got compliments all night. The quality and design are next level.” “Absolutely stunning pieces! I wore one of their dresses to an event and got compliments all night. The quality and design are next level.”

Chloe T

“So impressed with the fast shipping and gorgeous packaging. You can tell this brand truly cares about the details. Five stars!” “So impressed with the fast shipping and gorgeous packaging. You can tell this brand truly cares about the details. Five stars!” “So impressed with the fast shipping and gorgeous packaging. You can tell this brand truly cares about the details. Five stars!”

Isabella L

“I’ve tried so many boutiques and Sierra Sydney is by far the best. The clothes are stylish, flattering, and such amazing quality. Highly recommend!” “I’ve tried so many boutiques and Sierra Sydney is by far the best. The clothes are stylish, flattering, and such amazing quality. Highly recommend!” “I’ve tried so many boutiques and Sierra Sydney is by far the best. The clothes are stylish, flattering, and such amazing quality. Highly recommend!”

Olivia B

I was initially hesitant to switch from my usual brand to this new one, but I'm so glad I did! This product has exceeded my expectations. It's not only affordable but also incredibly efficient. The quality is top-notch, and it's user-friendly. I was initially hesitant to switch from my usual brand to this new one, but I'm so glad I did! This product has exceeded my expectations. It's not only affordable but also incredibly efficient. The quality is top-notch, and it's user-friendly. I was initially hesitant to switch from my usual brand to this new one, but I'm so glad I did! This product has exceeded my expectations. It's not only affordable but also incredibly efficient. The quality is top-notch, and it's user-friendly.

Maddie S

“The customer service was amazing. They helped me choose the right size and it fits like it was custom made. I’m genuinely blown away by this brand!” “The customer service was amazing. They helped me choose the right size and it fits like it was custom made. I’m genuinely blown away by this brand!” “The customer service was amazing. They helped me choose the right size and it fits like it was custom made. I’m genuinely blown away by this brand!”

Jessica M

“Sierra Sydney is my new go-to! The fabrics feel so luxurious and everything fits perfectly. I’ve already placed my second order—obsessed!” “Sierra Sydney is my new go-to! The fabrics feel so luxurious and everything fits perfectly. I’ve already placed my second order—obsessed!” “Sierra Sydney is my new go-to! The fabrics feel so luxurious and everything fits perfectly. I’ve already placed my second order—obsessed!”

Emily R

“Absolutely stunning pieces! I wore one of their dresses to an event and got compliments all night. The quality and design are next level.” “Absolutely stunning pieces! I wore one of their dresses to an event and got compliments all night. The quality and design are next level.” “Absolutely stunning pieces! I wore one of their dresses to an event and got compliments all night. The quality and design are next level.”

Chloe T

“So impressed with the fast shipping and gorgeous packaging. You can tell this brand truly cares about the details. Five stars!” “So impressed with the fast shipping and gorgeous packaging. You can tell this brand truly cares about the details. Five stars!” “So impressed with the fast shipping and gorgeous packaging. You can tell this brand truly cares about the details. Five stars!”

Isabella L

“I’ve tried so many boutiques and Sierra Sydney is by far the best. The clothes are stylish, flattering, and such amazing quality. Highly recommend!” “I’ve tried so many boutiques and Sierra Sydney is by far the best. The clothes are stylish, flattering, and such amazing quality. Highly recommend!” “I’ve tried so many boutiques and Sierra Sydney is by far the best. The clothes are stylish, flattering, and such amazing quality. Highly recommend!”

Olivia B

I was initially hesitant to switch from my usual brand to this new one, but I'm so glad I did! This product has exceeded my expectations. It's not only affordable but also incredibly efficient. The quality is top-notch, and it's user-friendly. I was initially hesitant to switch from my usual brand to this new one, but I'm so glad I did! This product has exceeded my expectations. It's not only affordable but also incredibly efficient. The quality is top-notch, and it's user-friendly. I was initially hesitant to switch from my usual brand to this new one, but I'm so glad I did! This product has exceeded my expectations. It's not only affordable but also incredibly efficient. The quality is top-notch, and it's user-friendly.

Maddie S

“The customer service was amazing. They helped me choose the right size and it fits like it was custom made. I’m genuinely blown away by this brand!” “The customer service was amazing. They helped me choose the right size and it fits like it was custom made. I’m genuinely blown away by this brand!” “The customer service was amazing. They helped me choose the right size and it fits like it was custom made. I’m genuinely blown away by this brand!”

Jessica M

“Sierra Sydney is my new go-to! The fabrics feel so luxurious and everything fits perfectly. I’ve already placed my second order—obsessed!” “Sierra Sydney is my new go-to! The fabrics feel so luxurious and everything fits perfectly. I’ve already placed my second order—obsessed!” “Sierra Sydney is my new go-to! The fabrics feel so luxurious and everything fits perfectly. I’ve already placed my second order—obsessed!”

Emily R

“Absolutely stunning pieces! I wore one of their dresses to an event and got compliments all night. The quality and design are next level.” “Absolutely stunning pieces! I wore one of their dresses to an event and got compliments all night. The quality and design are next level.” “Absolutely stunning pieces! I wore one of their dresses to an event and got compliments all night. The quality and design are next level.”

Chloe T

“So impressed with the fast shipping and gorgeous packaging. You can tell this brand truly cares about the details. Five stars!” “So impressed with the fast shipping and gorgeous packaging. You can tell this brand truly cares about the details. Five stars!” “So impressed with the fast shipping and gorgeous packaging. You can tell this brand truly cares about the details. Five stars!”

Isabella L

“I’ve tried so many boutiques and Sierra Sydney is by far the best. The clothes are stylish, flattering, and such amazing quality. Highly recommend!” “I’ve tried so many boutiques and Sierra Sydney is by far the best. The clothes are stylish, flattering, and such amazing quality. Highly recommend!” “I’ve tried so many boutiques and Sierra Sydney is by far the best. The clothes are stylish, flattering, and such amazing quality. Highly recommend!”

Olivia B

I was initially hesitant to switch from my usual brand to this new one, but I'm so glad I did! This product has exceeded my expectations. It's not only affordable but also incredibly efficient. The quality is top-notch, and it's user-friendly. I was initially hesitant to switch from my usual brand to this new one, but I'm so glad I did! This product has exceeded my expectations. It's not only affordable but also incredibly efficient. The quality is top-notch, and it's user-friendly. I was initially hesitant to switch from my usual brand to this new one, but I'm so glad I did! This product has exceeded my expectations. It's not only affordable but also incredibly efficient. The quality is top-notch, and it's user-friendly.

Maddie S

“The customer service was amazing. They helped me choose the right size and it fits like it was custom made. I’m genuinely blown away by this brand!” “The customer service was amazing. They helped me choose the right size and it fits like it was custom made. I’m genuinely blown away by this brand!” “The customer service was amazing. They helped me choose the right size and it fits like it was custom made. I’m genuinely blown away by this brand!”

Based on 778 reviews
From the people
From the people

“My package arrived so quickly and the pieces looked even better in person. I’ve already recommended Sierra Sydney to all my friends!”

Stacey Lovett, 2025
From the people

“I absolutely love the quality of my Leo Bikini Bottoms.”

Jessica Hevan, 2025