OK- I’m 4’11 131lbs and got a medium but could’ve gotten a small! It is huge… However, I use a belt to cinch the waist and it is adorable. Soft and comfy but there is a seam down the middle. I got it in black so it isn’t noticeable but I’m sure if it was in a lighter color I wouldn’t care for it.
I’m getting another one because I love it so much!

It's amazingly roomy without engulfing your figure. It holds its shape even after all day wear (an unplanned, but very comfy nap) and machine wash and dry. The fabric is breathable and so lightweight it's ideal for this hot Texas weather. The sleeves are flattering for those of us who have developed a little under arm wobble with age. Flattering neckline and the cuffs are not binding at all. I can throw this jumpsuit on with a pair of vans and run to the store. Or, so it up with some cute wedges and a belt. Versatile, comfortable, inexpensive and just plain cute. One of my best purchases ever.