I actually think Gucci shoes tend to run a little larger than other designers. Gucci (and Prada) shoes have room; I can regularly take their size 35.5 whereas I'm a 36 everywhere else. if your espadrilles fit well, I would stick to that size.
I'm surprised people are having trouble with Princetowns because mules are supposed to be easier to fit -- you don't have to deal with the back half much.
I'm surprised people are having trouble with Princetowns because mules are supposed to be easier to fit -- you don't have to deal with the back half much.