I'm a size between a 7 and 7, it depends on the style of the shoe and the brand, so for the DV Flora Flat I asked for a 7 so I wouldn't go wrong, but when the shoes arrived they didn't fit well, they're quite small for a 7.  Have that in mind when you order your pair.  Besides that they are very cute and should have been very comfortable save for the fact that they don't fit exactly right.