Caitlyn Jenner Instagram - Lead
Credit: Instagram/@zac_posen

Shortly after Bruce Jenner introduced the world to Caitlyn, the Olympian's female identity, on the new cover of Vanity Fair today, she sent out her first tweet: "I'm so happy after such a long struggle to be living my true self. Welcome to the world Caitlyn. Can't wait for you to get to know her/me." She opened up further to the magazine about her transition, detailing her experience and emotions throughout the process.

"This shoot was about my life and who I am as a person," she tells Vanity Fair. "It’s not about the fanfare, it’s not about people cheering in the stadium, it’s not about going down the street and everybody giving you ‘that a boy, Bruce,’ pat on the back, O.K. This is about your life."

But cheer they did—Caitlyn's debut was followed by an outpouring of support, not only from her friends and family, but from a multitude of other celebrity well-wishers. Check out their reactions on social media below.