Belting out U2's "One," pop diva Mary J. Blige celebrated the designing twins Dean and Dan Caten last Friday evening, ahead of Milan Fashion Week's official opening, to mark the 20th anniversary of their DSquared2 fashion label. The Caten twins, decked out in matching celebratory tuxedos, showed their tribute collection to 1,300 guests amid towering sculptures by German artist Anselm Kiefer at Pirelli's capacious Hangar...