The woman formerly known as "Keeping Up With the Kardashians" patriarch Bruce made her debut as Caitlyn Jenner on the cover of Vanity Fair on Monday (June 1). After coming out as transgender earlier this year, the Olympic athlete and reality TV star opened up about her ongoing transition on a two-part E! series. But viewers and fans had yet to meet her -- until today.

Twitter was flooded with support for Caitlyn, with barely any hints of cynicism. Here's how fellow celebs are reacting:

Jesse Tyler Ferguson

Gigi Hadid

Daughter Kendall Jenner

Anna Kendrick

Khloe Kardashian

Kerry Washington

Bonnie McKee

Kat Dennings

Becky G.

Billy Eichner

Ellen Degeneres

Representative Mark Takano

Lena Dunham

Kim Kardashian