10/10! I size down to the B cup because I wear a lot of lower cut tops and don’t want it to show up top! I own the C cup as well for regular shirts. I have so many of these lying around I can’t keep up! I buy a new one every other month to keep them fresh (not necessary but something I do) Bra Sticky bra Favorite bra Amazon LTKSpringSale LTKU LTKFindsUnder50