Its pretty comfortable.  I have not slept in it yet but I am wearing it during the day.
Its SUPER COMFORTABLE. Ummm its better with Loosier fitting clothes if you go out....because its not good at "covering the goods"......it supports them but they are on display if you wear the average shirt.......hmmm. I wore a jacket over when I went out. It worked out perfectly.

I bought this for a friend who is pregnant and for me who is not pregnant but ummm well endowed...and I love how comfy it is. It is not the prettiest but comfort is better when you're at home.