Lady Gaga, in a black Alexander McQueen dress, was one of the celebrities who attended the 2019 Oscars. While Emma Stone wore a sequined floor-length gown, Billy Porter wore a "gender-defying" velvet tuxedo gown. Regina King wore a white thigh-high slit gown and Olivia Colman, who won the Best Actress Oscar for 'The Favourite' wore a Prada outfit.