I wear a US 3x.  Following the size chart I ordered a 5x.  That seemed normal as I usually have to order 5x-7x when I'm ordering clothes made in China.  It is very big and I'm sure I would've been fine ordering a size or 2 smaller.  I kept it however because it is a robe and I use it just to cover up quickly if I need to run and grab something from the car or if I have a house guest.  Its very silky and nice feeling.  It's also very light which I was looking for as my other robe is way too hot in the summer.