February 23, 2019 - Getty Images North America more pics like this »
Lady Gaga
Lady Gaga attended the Oscars in a black Alexander McQueen gown with a special accessory: a Tiffany & Co. Yellow Diamond necklace. The show-stopping piece weighed over 128 carats and was discovered in South Africa over 140 years ago by the brand's founder, Charles Lewis Tiffany.