The Pose star wore a custom creation by Christian Siriano.
Billy Porter: Statement dressing at the Tonys, Oscars and Met Gala
Black Christian Siriano gown of Billy Porter - Wikipedia
Billy Porter's Oscars tuxedo gown and other headline-grabbing red carpet looks from 2019 - ABC7 New York
Billy Porter on Why He Wore a Gown, Not a Tuxedo, to the Oscars
Billy Porter Honors His Iconic Tuxedo Gown at the 2023 Golden Globes
Porter At The Oscars Online
Billy Porter Criticizes Harry Styles' 'Vogue' Cover; Says He 'Doesn't Care' About Nonbinary Fashion, On Top Magazine
Inside the Design of Billy Porter's Oscars Gown
Billy Porter speaks on Oscars gown and social media hate
NOT Skirting The Issue: Male Celebs Are Rocking Skirts, And We're Panting! –
Billy Porter on Becoming a Fashion Icon
Billy Porter Feeling the Financial Toll of Hollywood Strikes: “I Have to Sell My House” - Okayplayer
Billy Porter On Why He Wore A Gown, Not A Tuxedo, To The Oscars Vogue
Getting Ready with Billy Porter for the 2019 Oscars
I made Billy Porter's Oscars Tuxedo Gown (self drafted) : r/sewing