I'm 5'3 and normally 115 lbs. I am 8 months pregnant (very small look 5 months Prego) I ordered a medium and it fits perfect.once baby is born I feel it will fit a bit loose but that's what I wanted. I normally order smalls but wanted to something to hide the post baby belly a bit.  Won't know till baby born but I'm confident this will lay just right. Very soft material and beautiful color. Top appears to be easly accessable for nursing. I will be ordering more. Wish there was a short sleeve version.