All measurements below are body measurements. Take your time —
the right fit makes all the difference.
A note from the atelier
Our BYS pieces are designed to adapt and flatter every body shape.
Wherever possible, straps are adjustable so you feel held in all the right places.
If in doubt, size up and adjust.
1
Bust
Standing tall, measure loosely around the fullest part of your bust, keeping the tape parallel across your back.
2
Underbust
Around your ribcage, just under your bust. Tape snug and parallel across your back. Wear a non-padded bra for this one.
3
Waist
At the smallest part of your waist, measure loosely with the tape parallel to the floor.
4
Hips
At the fullest part of your hips and seat, keep the tape parallel all the way around your body.
Measuring for a bra: wear your best-fitting non-padded bra.
General tip: use a soft tape, held straight without pulling tight,
in thin underwear, and don't suck in. Still unsure? Try the
“Find My Size” tab.
💌 Not sure about your size? Our team is happy to help you find the perfect fit.
Easy return or exchange if it doesn't work out.
Cooling ice-silk comfort that disappears under everything. A wireless front-closure bra with bonded seamless edges that is easy to put on, breathable and invisible.
Front closure: fastens in seconds, with no reaching behind your back
Cooling ice silk: light and breathable all day
Bonded seamless edges: no lines under fitted clothes
Wire-free support: soft hold with nothing poking
4-way stretch: moves with you and keeps its shape
Sizes S to 2XL. Multiple shades available. Runs small, so size up. Free shipping and 30-day returns.
Shipping & Returns
SHIPPING POLICY
We offer free standard shipping on all U.S. and Canada orders.
Please allow up to 3 business days for processing before your order ships.
RETURN POLICY
30-Day Returns (excluding clearance/final sale items).
Products must be returned unworn, unwashed, in their original condition, and with all tags and liners attached.
For hygiene reasons, we ask that you wear underwear when first trying on your purchase. We reserve the right to refuse returns that show any signs of wear.
International returns are accepted. Return shipping and any reverse duties are the responsibility of the customer.
We cannot accept returns (even within 30 days of purchase) for items listed as final sale at the time of purchase. The acceptance of any return is at the sole discretion of the BYS team.
Fit Recommendation
Measure your waist, bust, and hips to find your perfect BYS size. If your waist and hip measurements fall within different sizes, choose the larger size for the most comfortable fit.