I'm 5' and 152 lbs. I got a medium. The top of the shoulders did not even reach my boobs. So then I got a large, which goes up to 187 lbs. It is tight in the length (I am FIVE FEET ZERO INCHES) and it does not really have any front coverage. Picture a man's wrestling onesie that barely covers his nipples but with a high neck. There's 4" of bra showing on each side. I am trying to understand how someone 30 lbs heavier than I am would possibly fit into this. I will not be sharing a photo because trust me, you don't want to see it!