I got some UGG boots in one of their new, more slender mainstream-looking styles. I sent back TWO different sizes on these and finally decided that the ones I had would work--but they were definitely a lot narrower than traditional UGGS.  And I have a square foot. Bummer.  But--did my research---bought this shoe stretch along with a set of wooden shoe stretchers. Together they worked very well. I may even have  OVERSTRETCHED the leather boots slightly--but I'll take them that way over the agony of pinched toes.  And my boots don't LOOK any wider--they just FEEL better!