I bought this item as a gift for myself for Christmas. I am a size 10 myself, but I ordered a size 12-14 to give me a comfortable fit. Upon receiving this jumper, I was very disappointed with the sizing, the jumper in length was too small, and the arms barely reached my wrists. Luckily, I managed to give it to a gift, to someone much smaller than myself.
Just beware before you buy, make sure to check sizing!
Other than the size, the jumper was really good quality, I would have loved it to be a nice comfortable fit!