I'm a 36 c, and i ordered large. they were a little snug. knowing they are supposed to be tight since they are sports bras, though, that would not affect my rating. i wear sports bras daily because to me they are way more comfortable than regular bras. i did return the large to get an xl. i love these bras! the xl fits me great, is super comfy (like you don't even realize your wearing a bra comfy) and very cute! i will definitely be buying these again when it is that time!