My favourite crop!
"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. 💕"






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-to-moderate 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: 4.829743 / 5 from 1439 reviews.
The Serenity Sierra Crop in Navy is celebrated for its flattering fit, high-quality fabric, and excellent support. Customers love its stylish appearance and the comfort it provides, making it a top choice for sports bras.
Review topics: [size, fit, straps, support, fabric, waist, quality, colour, material, look, feel, issues, shape, comfort, design, addition, customer service, cut, style, line, padding, coverage, comfy, stretchy, thickness, neck, difference, shipping, detail, weight].
"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. 💕"
"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"
"Love the fit of this and the fabric has lasted so nicely - a staple for sure!"
"The most flattering crop. Love the two tone. Perfect sizing"
"Obsessed is an understatement. Both me and my husband are obsessed with this. The support is chefs kiss, the chest looks fabulous during any and all workouts. I even go running on this top. The white details give it an elevated look. Fits true to size. One of my favorites from CSB!!"
"I’m always receiving compliments for this one, and people often ask where it’s from. It’s great support and suitable for all kinds of movements, from yoga to HIIT."
"Love this bra, especially for a heated sculpt class. It's surprisingly supportive and super flattering."
"It was very flattering. The size is just a bit tight to my liking but it looks and feels really nice. I love this brand <3"
"This crop is so cute and comfy, one of my new favourites! I'm 5'8" 135 lbs and the XS fits me true to size. No built in bra which I actually love. . . gives a little extra oomph when you have light support and makes it more versatile. I just wear covers below which works great. The fabric feels amazing and it's so flattering. I've been really impressed with CSB quality in general, my pieces from over a year ago still look just as good as the day I got them. Definitely a staple!"