I purchased two pairs of these boots for my daughters at Christmas from Famous Footwear for $80, during a BOGO sale. They were so cute, and after a week of below freezing temps here in CO. I wished I'd purchased a pair for myself. I've had no luck finding any, especially at that price, except on Amazon. Reading the reviews, I was concerned about the size issue, so did some homework. I usually wear a 9.5 if it's a wider fit and round toe, and a 10 if not. My calf is 15 1/2". I ordered the 10, since there are no 1/2 sizes. The 10 is perfect around my calf, but a bit big in the foot but SO comfy I have no complaints! My daughter usually wears a 10 1/2 or 11, and the 10 is perfect on her. My younger daughter wears a 7 1/2 or 8, and the 8 is perfect on her as well. Both of them have much slimmer calves- but they are super cute on all of us! We love them!