amazing quality
"Surprisingly very supportive even for running! Love the fit and very comfortable!"








for all orders over $150 (USD)
within 30 days (exclusions apply)
The original CSB classic, this sports bra is a crowd-favourite for a reason.
- Light support
- Double lined, no padding
- Thick crossed straps for support and comfort
- Flattering twist detail
- Serenity fabric
80% Polyester, 20% Elastane
FREE SHIPPING ON ORDERS OVER $150 USD
Enjoy free standard shipping on all orders with a merchandise subtotal of $150 USD or more. Eligible orders will automatically receive a free shipping option at checkout.
Shipping costs for orders below this threshold are calculated at checkout based on your delivery location and parcel weight.
Duties and taxes are prepaid where available. If included, your selected shipping method will display "Duties & Taxes Prepaid" at checkout.
If this label is not shown, any applicable duties, taxes, or import fees will be payable by the recipient upon delivery.
30-DAY RETURNS
We want you to love your CSB pieces. If something isn't quite right, you can return eligible items within 30 days of delivery for a refund, store credit, or exchange, subject to our return policy.
Refund Eligibility
Please view our full Returns Policy here.

Overall rating: 4.8373146 / 5 from 1549 reviews.
The Serenity Sierra Crop sports bra is praised for its amazing look, supportive fit, and high-quality material. Customers love its flattering style and soft, comfortable fabric, making it a top choice for many.
Review topics: [size, fit, waist, colour, length, design, fabric, support, material, weight, feel, line, quality, look, style, issues, comfort, customer service, shape, pants, padding, straps, cut, addition, coverage, comfy, thickness, stretchy, detail, neckline].
"Surprisingly very supportive even for running! Love the fit and very comfortable!"
"Absolutely love this two-tone colour combo! 😍 So flattering, stylish and unique. Definitely one of the best CSB colour combinations!"
"Absolutely love this crop! 😍 Super flattering, comfortable and stylish. The black is so sleek and easy to match — another CSB favourite!"
"loveee so cute cinches perfect fit love this selection perf for pilates yoga treadmill etc"
"Absolutely love this black twist crop! It's so flattering and fits perfectly. The material is really soft, comfortable, and feels great quality. It goes with everything, whether I'm wearing it to the gym or just out and about. Such a staple piece—I know I'll get so much wear out of it!"
"Cannot fault this crop. Perfect cut and style for my build and size whilst still looking chic. Washes well without piling."
"super cute comfy serenity top! works well with HIIT and is great with the girls"
"Favourite style of CSB sports bra. So flattering yet supportive"
"This is sooooooooo cute!! I love that it looks like a halter but is alaso super super comfortable!"
"So flattering and supportive, and it fits my D cup boobs really nicely. I would recommend sizing up for the best fit. The cut is super flattering and makes you feel really confident while still being comfortable. 💕"