The new Louboutin styles all have a really short upper. They really squeeze your toes. If you have wide feet go up a full size, but usually you should go up a 1/2 size. I'm in between sizes like I can wear a 5.5-6.5 but I have wide feet so I wear a 37 in Louboutins and they're a tiny bit big so my shoe sales person at Nordstrom showed me these things you stick in them that make them fit. Certain styles can fit differently than others (like the mad mary-everyone has to go a full size up) so you really should try it on.