Ordered 51/2 should have ordered 6, a little tight in width, I usually wear 5 1/2 so run small.  Not as comfortable as I wanted but cute shoe.  Would have kept a six. Also, even though 5 1/2 was snug in width my heal still
Moved in back so not sure how a 6 would have worked.  I learned that shopping for shoes on line is very risky, have done to many returns, paying for shipping was to expensive !