Im usually a S so i ordered a S. But i feel like this top is best suited for small breasted girlies bc the fabric is tight in a good way so it might give big breasted girlies nip slips and underboob. Its thick and snug which i love. The cleavage is good enough to slow a lil sum but too much ;)

Material is heavy duty thick material that pushes the girls up . I’m a 34B and I don’t need a bra with this that’s how thick it is IT HOLDS as if it’s a bra. IF YOUR anything past a B cup I recommend sizing up like two times your size or your chest will spill & the buttons aren’t going to help