SPICE AS NICE: Forget tracksuits, leopard-print pants and platform shoes: The Spice Girls will be sporting a whole new look come time for their reunion farewell tour, which kicks off in December. "Roberto Cavalli will design all the costumes for the Spice Girls concert," said Victoria Beckham, who swung by the Roberto Cavalli store opening on the Avenue Montaigne Thursday night. "They are mind-blowing. There is something very special for each of us girls. We worked together and he moved us on from our past look." Beckham was in town to be shot for the cover of American Elle and also to attend today's Chanel show. Meanwhile, Arielle Dombasle, who donned looks designed by Cavalli during her Broadway performance, said she was gearing up for her show at the Crazy Horse this December, where Christian Louboutin has also lent his talent to design a pair of shoes for an act during the show.