I usually wear a street size 8 1/2 narrow or slim and I ordered this shoe in a few different sizes.  The 9 1/2 narrow fit the bill perfectly.  The shoes are great for the stage/dance and so comfortable I'd wear them as street shoes if they had my size in the caramel.

If you look at the shoe in the box (at least in the narrow width), it is a fairly slender-cut shoe so if you have a narrow foot, fear not--this shoe should fit you fine.