I got these in a 7, and I wish I had a 6.5.  For reference, I usually wear a 7-7.5.  I fixed this by putting a dr. scholl's for her in them, and they fit fine now.
Do not let them get any kind of wet, as they will stretch out more.  But they are very very cute, and comfortable!

Addendum on 5.28.2014
These are the most comfortable heels I own. I look forward to warmer months when I can finally wear them! I can walk for miles, dance all night, or stand all day in these babies. They're finally getting a little worse for wear though - as I mentioned, they stretch out if you get them wet, and I've put them through the wringer. Sad they don't make them anymore!!!