I first purchased black size 10. Size 10 was a little too big but I kept the 10. I wanted a 1/2 size smaller in navy and ordered 9 1/2 in navy. The 9 1/2 fit like an 8 1/2 so I returned the 9 1/2. I would like a pair of navy but am unsure what size to try. An attractive shoe but too unpredictable on sizing.