Few fashion houses delight in being a one-trick pony. Not so at Hervé Léger, where bandeau dresses rule — and will as long as there are heat-seeking starlets to go around. For fall, the look went utterly primitive — Azria’s currently drumming, according to show notes, “to the beat of the urban tribe” — and, thus, concrete-jungle tough chic. Think Grace Jones-as-Zula hitting the Miami club scene. Azria’s Africana motif came out in graphic tribal patterns, slick snakeskin inserts and metal-plate embellishments. Colors, meanwhile, stayed earthy: browns, greens, coppers and blacks. As for the silhouette, it was thigh-grazing, body-conscious and sexy — natch. But Azria kicked it up an edgy notch with tight padded shoulders, à la recent Balmain, for an extra dose of warrior savagery.