I think it is the classic style, plus the red, white, and blue combo (which does *not* make you look like a flag, which is my concern about wearing these colors together.) Plus, like other said, the color combo is vaguely naughtical, and you posed next to the water. And, you look approachable. I think that figures in to idea of being "all american".
Plus, with your fair skin and blonde hair, you fit into the "all american" myth of beauty...although we all know americans come in all color combinations. But that's a long, tricky, difficult post that doesn't belong here.
I think maybe the speaker was using "all american" and "classic" interchangeably in this instance, when the terms really aren't interchangeable. That said, we will be happy to claim you, even if you aren't American.