I am usually a size 8.5, but the boots I currently have been wearing have started feeling just a bit small.  So I ordered these boots in a size 9.  The foot part was way too small and narrow, but the calf area was huge!  I'm 5"7' 130lbs and just have average sized calves -- not big, not tiny.  They're cute boots.  But I had to return the because of the weird sizing.