The buckle does look strange but I think it has more to do with the belt. It's thick and wide and seems separate from the rest of her outfit. Also her body is very straight! Her coat edges are so straight that she looks like a pencil and her coat looks stiff.
I love the background! The clockpost next to the lamppost.... is creative. And why the fuck is that traffic cone green? I've never seen a green traffic cone. I like the way you blend colors with a sort of blurred air-brushy quality.