brigaeiro: Sorry about taking a while to get back to you!! Actually I find the ballet flats run about 1/2 size small. But if you're used to European shoes, you shouldn't find them running small since they run smaller than US sizes.
However, if you like more room in your shoes or don't want to have to get used to the elastic digging in on the first day, maybe you should go half a size up. My ballet flats range in sizes from 36(I normally wear 36 in European shoes such as Manolos, Choos, Louboutins), 36.5 to 37 because my feel swell up by the end of the week and I need about a full size up by the weekend. And when my feet aren't swallen, I wear 36.5 and 37 with insoles on the top half....for extra padding and comfort. They make the flats unbelievably comfy
Belowen: Thanks for the compliment!!! What's the next pair you're going to buy??? I have a few I'm lusting after at the moment, but I'm trying to be good right now and save up for the fall clothes I pre-ordered at the Lanvin boutique
StellaMare: Fab decision!!!!! Honestly, Lanvin flats are the cutest, most versatile, comfortable, shoes there are!!!!!!!! But I wouldn't necessarily recommend you buying satin...although they're elegant and gorgeous. Not only they get worn rather quickly, they're stiff and they don't give like the leather ones. I would stick to leather if I were you!!! Have fun deciding
And post when you get your first pair~