I have very wide feet and large calves so getting boots (or shoes) to fit is difficult.  I wear a size 8EE.  I ordered a size 9 in this boot and it fits my foot just fine, but will not go over my calf.  I took them to a shoe repair shop and they installed some elastic on the inside calf and now I can pull them up where they belong.  The heel is very tall and inside the boot the vinyl/plastic (whatever it is) sticks to your bare leg.  It's not really uncomfortable but if you aren't used to walking on tall heels, prepare for a workout.

I've worn them twice now.  The first time I couldn't wait to get my poor feet out of them.  The second time, I added a gell insert for my heel and found them to be rather comfortable.  I am considering adding a gell insert to go under the ball of my foot and then they should be just about perfect.  Oh yeah, did I mention that they look awesome?!