Lada Gaga in Tiffany & Co. gets my vote for best bejeweled of the evening. Her look was classic with just the right amount of diamond pieces to recall old Hollywood glamour with an edgy version of the black gown. Her pieces included a Tiffany necklace (1955-1965) with diamonds, Tiffany Victoria mixed cluster bracelet with diamonds, and Etoile five-row band ring with pavé diamonds, all set in platinum. Photo: Shutterstock.

Jessica Chastain never disappoints when it comes to allowing one statement piece to tell her jewelry story. This emerald and diamond necklace was Gucci High Jewelry. Photo: Shutterstock.

Cara Delevingne dazzled in Bulgari, wearing a High Jewelry Serpenti necklace in white gold with two pear-shaped brilliant cut emeralds and pavé-set diamonds, High Jewelry Serpenti bracelet in white gold with pavé-set diamonds and High Jewelry ring in white gold with turquoise an oval emerald, eight triangular diamonds and 12 fancy shape step-cut diamonds. Photo: Shutterstock.

Michelle Yeoh, another style-setting actress, continued to inspire us in Moussaieff High Jewelry, including a necklace turned hair ornament, long swinging diamond earrings and diamond ring. Photo: Shutterstock.

Danai Gurira, star of Black Panther: Wakanda Forever, was bedecked in Messika diamonds from her hair ornament to her ear climbers to her bracelet and ring. She wore her diamonds against a strapless black Jason Wu custom gown. Photo: Shutterstock.

Rooney Mara often evokes an ethereal aura, and the 2023 Oscars ceremony was no exception. Her pale gown provided the perfect neckline for a Fred Leighton circa 1910 diamond and platinum choker, a Fred Leighton 19th century diamond fringe necklace and a variety of Fred Leighton diamond and platinum rings. Photo: Shutterstock.

Janelle Monáe stood out in a mix of black bustier with bright orange skirt, but her Reza jewels were the most alluring part of her look. She did her part in “bringing back the brooch,” wearing a Reza platinum diamond floral style pinned to a choker, accompanied by Reza Lattice diamond earrings, Spirale diamond rings and Eventail ring with pear and round diamonds. Photo: Shutterstock.

Florence Pugh wore Tiffany & Co. She added color to her sculptural diamond necklace with pink tourmaline and diamond earrings and two Tiffany Soleste rings, one with a pink tourmaline and the other with morganite, both accented by diamonds all set in platinum. Photo: Shutterstock.

Zoe Saldaña sparkled in Cartier diamonds, including Cartier Collection diamond pendant ear clips from 2007, Pluie de Cartier Arabesque necklace in 18K white gold and diamonds and Cartier Collection ring in 18K white gold and diamond with a cultured pearl. Photo: Shutterstock.

Elizabeth Olsen looked chic and elegant in fringe style Cartier Collection ear pendants, circa 1990, in 18K yellow gold and diamonds and Cartier Collection ring, circa 1995, in 18K and diamonds. Photo: Shutterstock.