I’m 5ft1 and 130lbs I’m usually between small/medium and ordered a medium and it fit perfect! Definitely runs small so I suggest sizing up! The dress is great quality and looked amazing in my engagement photos, only thing I didn’t love was how the top part of the bustier is so open, I ended up pinning it together so I wasn’t so open/busty in my photos. I’ve ordered 2 dresses from this company and will probably order again when I see something else I like!