Where I live in southern Ontario, in the summer it's very common to see girls in shorts and those sort of retro-style slouch/ankle boots or low-rise mocs. I'm not sure about the current trends in Bremerton, but high-top tennis shoes are still very popular for boys, pretty much everywhere I think.
Teenage girls in Daisy Duke shorts and cowboy boots are VERY common here, but they'd be in about the last category of suspects to murder and dump a 6 year old girl, IMHO.