CNN  —  Selena Gomez is no stranger to old Hollywood glamour, having wowed awards season with a succession of stunningly chic retro-inspired outfits. At Sunday’s Oscars, the “Emilia Perez” star opted for another classic look, arriving on the red carpet in an off-the-shoulder custom Ralph Lauren number with an impressive detail: over 16,000 drops of glass and hand-sewn Rosemont crystals arranged into a lattice pattern. The dress was made by a team of 12 Italian artisans who airbrushed the glass