I have four other pair of UGG boots including the new model short top boot, and they are all size 8 and all fit as expected - GREAT.  I have tried to make these boots work, but I think it is a manufacture error.  The stitching across the top of my foot is so tight, and the whole top of the boot feels much tighter than any of the others I have.  I thought perhaps the lining would settle and they would be more comfortable, but it has not.  I am so sad, this was not a cheap purchase.  Update to this review.  I took a chance and went to the UGG website and they will do an exchange with very little paperwork even though I did not make my purchase from their website.  I am so happy now!