This is funny / interesting and thanks for bringing this up, 2much2do! I didn't think it was possible. I've been an 8 my entire life and sometimes, pending upon brand 8.5. Two weeks ago, I'm in Macys and voila, the 8's were too big (feet were sliding) and I went for the 7.5 thinking that it's impossible for my feet to shrink. It's important not to cram up your feet, they need to breathe however, if the shoe doesn't fit...