Ok, I got my information from
here. Shoebunny is probably more of an authority, though. It's the same sandal, credited to Manolo by one and to Caovilla by another. I believed it was a Manolo because Caovilla has really ornate designs, as a rule, and Aniston's style is more toward the classic/minimalist. But now, I'm not so sure!
PS: Check your private messages!