How does Gucci shoe sizing run?

I have a gazillion pairs and they run true to size for me. I mainly have slides but in my 4 pairs of boots from them it would be nice to be able to go up a half size if I could...the 11 is a perfect fit with no room to spare.
 
I have many Gucci shoes and it depends on what type of shoes you are getting. I normally wear a size 5. In flats, I get my true size. In wedges or pumps, I get a 1/2 size smaller just because they fit a little tighter and are easier to walk in.