I really do love these shoes but I have to be diligent about putting my band-aid friction stick.  My feet are slightly different sizes - its pretty minute.  BUT I can tell in these shoes.  One foot - never has a problem.  The other - the strap will cause a blister if I forget to use the friction stick.

Other than the strap issue the shoes are comfortable and super cute.  I'm typically a 7 1/2 and I ordered a 7.  I went to the store and tried on an 8 - and they were way too big.