Actually, I love seeing children uniquely dressed. If it's reasonably clean, it's cool with me. It's nice to see a child who isn't dressed like a plastic doll.
I'm probably lucky I don't have children, because I would "dress them funny," and when they were old enough I'd encourage them to dress any way they liked, even if it shocked people. My luck, I'd get a kid who favored three-piece business suits or worse, wanted to dress like everyone else {shudder}.