I saw varying posts regarding how the sizes fit and figured my best bet was to go with my true size.  I am a 9 across the board in every shoe I've worn, but these are snug.  If a half size option is available for you, I would say based on my experience alone going up a 1/2 is a safe bet.  But according to other posts, it's the other direction.  Best of luck buyer, these gorgeous black pumps are pretty to look at, wish my feet luck on breaking them in...