YvesSaintLaurentwasthelastofthegreatParisiancouturiers.In2002,hebidthefashionworldadieuwithonefinalcollection.Celebrationisanimmersiveexperienceinanindustrythatcansometimesfeellikeyou’reonanotherplanet.Thisportraitofafashioniconinthosefinalyearstakestheformofapanoramic,no-nonsensemontageofobservationsbehindthescenes,wi…