Love this jumpsuit, i was rather apprehensive as i didn't think it would look as good on me as on the model but i am totally smitten with it. very flattering, especially if you have some bumps and rolls. i ordered in a medium (5.7 and 145 lbs and it fits perfectly. definitely recommend to order down. 
as i'm wearing it to yoga i wear a sports bra underneath, that also helps with the very deep and open back to cover up a bit more. highly recommend, the top hits in all the right spots to make one