I ordered these in an 8, which is my usual size and they fit perfectly.  They are tall, but I am used to wearing heels and find them very comfortable.  The quality is lovely.  I have muscly calves and usually have trouble finding boots that my calves can fit in, but these were perfect, if not verging on slightly loose, but with a sock on underneath - perfect.  I have only given 4 stars because I find the ankle part of the boot is very loose and sags a lot, which was a little disappointing.  But overall, these are wonderful boots and I would definitely recommend these.