My usual size is a large but with corsets i always size up to an XL and that’s exactly what I did with this one but it’s still REALLY small in the bust area so if you have a bigger chest I’d recommend sizing up. Also, this top is cute however it’s very and I mean very fragile, the plastic things that keep the corset shape were already poking out when I received it. When i tried it on another one started poking out so do be careful.