New season, new swim.
Spring Refresh: March 17
A major restock is here, along with fresh styles just in time for spring.
Bestsellers Return Soon.
Your Most-Loved Styles, Restocked
Your favorite styles are coming back—don’t miss out on the pieces you’ve been waiting for.
Want First Access?
Join the Waitlist for Your Favorites
Click on your favorite sold-out styles and hit ‘Join Waitlist’ to be the first notified when they’re back.
Something New is Coming.
Fresh Styles Drop April 4
A fresh collection is coming—new colors, fits, and must-have styles made for sun-drenched days.
Mark Your Calendar.
March 17 Restock. April 4 Drop.
Bestsellers are back, and fresh styles arrive soon. Don’t miss your chance to shop first.
Let customers speak for us
So soft and perfect size, can’t wait to enjoy it for summer ✨🖤
They’re very true to size
Super flattering! I have it in green and white now! I need every color!
I LOVE this one piece. This is my 2nd one piece ive purchased from here and the quality is 10/10, and the style/ comfort is a 10/10. In total I have 13+ bathingsuits from Sienna Swim, I need a model/sponsor LOL
I’m a size 36/D, the cup size in this is a little smaller, i sized upa and it is so flattering, so i would size up, but it’s such good quality and so so cute. Fit was so flattering!
Great quality, cute fit, amazing customer service. Thank you, Sienna! <3
Im a D cup and it’s such a flattering top!!
The quality is seriously unmatched. Couldn’t recommend enough
Absolutely love the isla design it’s so cute. I got a size medium and I’m 5’1 & weigh around 150-155lbs! Sienna did her job with this one fr. It’s perfect for tanning with the coverage it gives. It’s adjustable too that’s always a plus! I got the matching top too. I didnt have too many pics of this on though. But I’ll definitely order more of this style for the summer or vacation (:
I ordered this during the holidays yet it still shipped out pretty quickly! I ordered this for my trip to Maui and I got so many compliments on it! I got a size Medium. Which I believe sienna wears a medium for the one pieces too. I am 5’1 & around 155lbs for reference. I have more of a wider back so I love the open back on this! I do have a longer torso shorter legs so typically other one pieces fit weird on me but this one doesn’t! It has a nice stretch to it obviously meant to swim in but you can definitely wear it for a casual wear too! Pair with jeans or shorts. Anyway I’m a big fan of Sienna!! <3
i LOVE this swimsuit. so pretty and flattering and i was so so so impressed by the quality. Definitely would recommend this style
Best bathing suit I’ve ever spent my money on. I don’t think I will ever love any other bikini as much as this one. So beautiful.
So freaking smooth
Love the material
this swim suit top is comfy & true to the size. also it’s my first time purchasing from here & i just have to write a review saying not only is the swimsuits genuinely great quality but the customer service is top tear as well as the personalization of each package being delivered to you w your name on it was something i wasn’t expecting & refreshed to see! i will be definitely repurchasing from here on out!!!
It feels so light and comfortable and is actually the cutest thing I've ever owned
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