The Oscars red carpet is the world’s longest runway, where Hollywood’s biggest movie stars parade one-of-a-kind gowns and dazzling high jewelry. This year, the talent descended on the Dolby Theatre in Los Angeles wearing custom finery, from Chase Infiniti’s river-of-ruffles silk Louis Vuitton dress, which took 750 hours to make, to Ejae’s gold sequin Dior confection by Jonathan Anderson.