Do Gucci shoes run True to Size?

I'm usually a 7 - lately I'm finding myself in 7.5's - like Stuart Weitzman I'm definitely 7.5 - (stupid painful bunion LOL)

What size in Gucci should I go with - thinking about a pair of flats
 
No. I have 3 pairs purchased within the past 15 months.
One is a size 37.5, one is 38 and the last is 38.5.

It really depends on the shoe and it's cut. I can be any of the 3 sizes in Gucci shoes but mostly 38-38.5.
 
I am a US 11 and I find their 41s are a perfect fit. Sometimes they have 42s available which I think I prefer in a super high heel closed in pump for a bit more room. It is one of the few brands with a 41 that is actually a true 11.