I'm a 9 or a 9.5 in most shoes and a 10 in heels. I bought a 10. If they had half sizes, I'd return for 9.5s. I wear heels maybe once a year, or once every other, so I don't know what I was thinking! They're actually not difficult to walk in! Color me impressed :) But they are not stand-in-one-place shoes. I can walk if I'm constantly moving, but my poor feet if I stand still for more than a second. :( So I'll only be wearing these with a costume.