I'm a 32C size 6 and small fitted great.
It does seem small but of course, otherwise how will it pull your boobs together and give cleavage.
My suggestion is, switch the tie with a shoe lace or something that isnt stretchy, holds better and feels safer.
Rated 5 out of 5
Rated 3 out of 5
Rated 0 on a scale of minus 2 to 2, where minus 2 is Runs Small, 0 is True to Size and 2 is Runs Large