PUNKY BREWSTER WANNABE? Ahh, dresses: warm-weather balm to many a warm-weather fashion conundrum. This engaging solution comes from Skunkfunk ($158), a futuristic combo of '60s flight attendant and roller derby babe. The light-weight fabric will let you hit the street in style even when the humidity sets in; a scrunchy belt sets a slim silhouette. GET IT:Lettie Gooch, 1517 U St. N.W.