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








for all orders over $150 AUD
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
SHIPPING
Orders with a subtotal over $150 AUD will be provided with a free shipping option in checkout. Please know that the cost of shipping is calculated at checkout and based on delivery location and weight.
Parcels being sent outside of Australia may be subject to customs, duties and taxes. Please read more regarding this here.
RETURNS
At CSB, we want you to love your pieces! If something isn’t quite right, you’re welcome to return your order within 30 days of delivery, provided it meets our Return Eligibility Requirements.
Read more on the Returns Policy here

Overall rating: 4.847747 / 5 from 1642 reviews.
The Serenity Sierra Crop in Black is celebrated for its perfect fit, flattering design, and high-quality material. Customers appreciate its light support, soft fabric, and beautiful color, making it a favorite among sports bra users.
Review topics: [size, fit, straps, support, length, weight, fabric, colour, waist, material, design, issues, quality, look, feel, lines, shape, comfort, style, addition, stretch, cut, customer service, piece, padding, coverage, detail, leggings, comfy, thickness].
"Surprisingly very supportive even for running! Love the fit and very comfortable!"
"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!"
"loveee so cute cinches perfect fit love this selection perf for pilates yoga treadmill etc"
"Cannot fault this crop. Perfect cut and style for my build and size whilst still looking chic. Washes well without piling."
"Favourite style of CSB sports bra. So flattering yet supportive"
"The Serenity Sierra Crop is so flattering and comfortable. It has the perfect amount of support for workouts while still feeling really lightweight and easy to wear. The fit is secure without feeling restrictive, which makes it perfect for training sessions or everyday movement"
"The most flattering crop. Love the two tone. Perfect sizing"
"I love this for my hot yoga and Pilates classes. I’m an instructor and I like that it stays in place. I’m small chested after a explant surgery and I feel like the bra is flattering. Dries quickly so I don’t feel gross and cold after class."
"I looooove this crop. I have worn them out, gone up sizes, down sizes, and I always repurchase no matter where I'm at in life. I haven't worn a bra in years, I've just worn the Sierra. So good. Love love love."
"super low support and unpadded. Not very flattering and returns are not worth it considering it would cost $10 plus shipping to return a $40 bra"