36DD-35-42 I fit a L in FN bottoms with stretch & a XL with no stretch. I purchased a L in this jumpsuit & it fit perfectly. There’s some stretch to it. The straps in the back are elastic & adjustable so if you’re smaller on top you should be fine. The string in the front is good quality & is easy to pull and it adjusts the garment well. Gives me perfect cleavage & coverage. If you have a larger cup size, I suggest sizing up for coverage of you can. (I’m a true 36DD most of my bras are this size, but my bra sister sizes are 34DDD or 38D) If you have bigger hips definitely size up.. I almost thought it wouldn’t zip up but it fit Perfectly. I have a little bit of a belly, but the front smooths out nicely 😊