This is a great dress, I'm in my third trimester and love how comfortable it is. I ordered a medium. I'm 5'6" and weigh about 145 right now. I wish I would have ordered a small. I like the room I have in the dress (nothing even remotely tight is comfortable to me right now), but the bodice hangs a little lower than I would normally like. I might order it again in a small and compare. It seems very comfortable, and it's going to come in handy when you have company over to see the baby, but you don't feel like moving at all.