I'm 5'6" and wear a US size 8.5-9. So, you're 5 inches taller with the same size feet! Lucky you.

My wife is 5'4" and US size 7.5-8 I think, so we're actually kinda proportional to each other, but she can't steal my shoes, lol.
I keep thinking I have big feet too, when I'm wearing flats, but in heels, dayum they look nice, hah!