I'm a 32/34 DD and ordered a small. It felt loose under my boobs and feel it may easily ride up. Very very light support, all this really did was slightly flatten me which i suppose is due to having a fuller bust. Would have the same effect with a fitted cami. I can't really think of a situation i'd want to wear this where i wouldn't just be happy to go without a bra. Very soft stretchy fabric and I liked the shape so feel there is potential with some of the other styles but don't want to keep buying different sizes and styles as can't return.