I usually wear a 7 wide.  However, this wasn't available in a 7 so I figured a 6.5 would work seeing as it was a WW.  It was so long that the shoe slipped off completely and my foot didn't fill the sole which looked horrible.  I exchanged them for a 6 WW (haven't worn a 6 since ???).  Length-wise it worked but now it was too tight across my foot.  It's a shame - it is a nice shoe just a bad fit.