It's art; it's fashion. It's good; it's bad. It's sexist; it's not. It's Vanessa Beecroft's performance art. And one's mind can feel like Faye Dunaway's face in that famous slapping scene in ''Chinatown'' when confronted with it.
Since 1994 Ms. Beecroft, a 29-year-old Italian artist, has become known for pieces involving up to 20 vaguely similar women wearing underwear, high heels (or sneakers), maybe pantyhose or wigs, and not much else. The work has an anthropological logic: the performers and their costumes usually come from the city in which the performance is taking place.