I have been a little hesitant. I wear a US12-13 in men's shoes, but I had no idea about what size to order. I took a chance on these via Ebay and went with the US15. They are a little snug still, but through some wear, I think they will be fine. They are more comfortable than some of the other heels I have. I think in the long run, they could be my favorites, but now I have at least one pair of Onlymakers to wear.