Rihanna Wearing a Maison Margiela By John Galliano Crystal Outfit For her unforgettable performance at the Oscars, the "Lift Me Up" singer wore a black and silver embellished Maison Margiela by John Galliano outfit, complete with a sheer, empire-waist blouse, floral trousers, and leather elbow-length gloves that amounted to 142 carats. Image Source: Getty / Kevin Winter