I ordered my normal size I am 5 9’ 170 at the moment I fluctuate from 5 to 10 pounds a lot. if I lost about 10 pounds I would probably fit but there’s no guarantee. I am returning and ordering a large! I didn’t even get this all the way on my body and I loved it but want to fit comfortably in it. such an elegant and unique look I love it and can’t wait to get the right size!!😬 also check all the mirror pieces on it. on mine on the side was a piece that had a perfect cut down the middle of it and can tell it was not supposed to be there.