Runs small. I have a 26" waist and 39" hip and got size S, and the panty waistband is too tight. I measured it with a measuring tape and the waistband is literally 22". The cut (especially in the back) is also kind of weird, I don't think very flattering (but maybe because it was too small). However, I LOVE the bralette, it is so so cute. The cups are extremely low-coverage. I wear a 34D bra and it was fine, but if you're bustier I feel like you will be spilling out. The bralette did come broken, I had to sew it back together. I guess you get what you pay for.