I got this top in a small and I am small chested 32C. I can fit a strapless bra under. This material is purposely sheer but a nude strapless bra doesn’t really show through. Also it is a slippery material so keep that in mind, you might be pulling it up. Nothing a little boob tape won’t help. I think this is cute for girls night or date night. If you’re on the fence about sizing I would size down so you don’t have to pull it up as much. The closure notches are in front so you don’t have to worry about it coming undone anywhere else.