She styled a semi-sheer long-sleeve black shirt atop a white tee, which she paired with a knee-length leather skirt—the undeniable star of the sartorial show. Melanie Miller / BACKGRIDFor her latest outing, however, she made a convincing case for leather as part of a casual off-duty ensemble. To finish things off with a hit of structured polish, she wore a black Saint Laurent bag with gold-chain straps slung over her shoulder. Courtesy of Saint LaurentThe 29-year-old singer is something of an expert in all-black outfits with an edgy accent. And her versatile leather skirt makes for an impressive addition to the repertoire.