I bought this in a medium at the store (usually a size 8 -10) and bought one for my daughter who was with me ,in the coral color. (she's 7 months pregnant , and bought her a small. it fits fine below the belly. she loves how comfy it is.) my other daughter saw them and i had to buy her a pair as well. :>) so, we were hanging out at the hotel on a girls weekend and wore them at the pool and even to sleep in. i think you can actually dress it up and wear it out and about as well. i did see that a