@warpedmind Try searching for a full body picture and maybe you can compare her feet to a friend who actually is a 5 or 6. Then maybe.
2014-02-24 00:59:21BackInBlack60 (user)
@warped - I dunno. I'll believe size 5 US; she's only 5'4" and her feet aren't much longer than her hands. Size widely reported online as 5US, and the Leonardo DaVinci Virtual Man measurements seem to concur: