This is tagged as a size 2x, however it runs large imo. I've attached the size chart but I got a 22inch flat waist measurement IRL. It does have a back stretch panel so it could accommodate even more and my D cups had ample room in the bust when I tried it on. There are the side lace up panels to cinch as well. Details + Features Wrangle in admirers with this playful 1950's themed swing dress! Crafted in a soft red and white knit, this fun piece has blue cow patchwork details dancing across it. Complete with side pockets, a back zipper and lace up ties to cinch the waist. 100% Polyester Hand Wash, Hang Dry Unlined, Back Zipper, Hook Side Pockets Adjustable Straps Front Lace Up Ties Model Pictured Wearing Size M; M Length 37 1/2" Model Info: Height: 5'7" / Waist: 27" | Hips: 40.5"| Bust: 34B