Caitlyn Jenner, formerly Bruce Jenner, debuts on the cover of Vanity Fair

"Call me Caitlyn."

The iconicU.S.Olympianand parent in the extendedKardashian familyformerly known as Bruce Jennerdebutedas a womanMondayon the cover of Vanity Fair magazine.

Caitlyn Jenner debuts on the cover of Vanity Fair

9 years ago

Duration 3:48

CBC's Jelena Adzic has details of Bruce Jenner's new identity

Meet Caitlyn Jennercover model, lovingparent to 10 childrenand possibly the mosttalked-abouttransgenderwoman of 2015.

Jenner'slong-awaited debut as a woman gracesVanity Fair's July 2015 issue, which hits the stands June 9.

The cover, shot by famed photographerAnnieLeibovitz,is one of the firstportraits of Jenner as Caitlyn.

Additional photos fromLeibovitz'sshoot inside Jenner's Malibu home in Californiaare set to be revealed intheissue, alongside a "revealing" interview and story by Pulitzer PrizewinnerBuzzBissinger. A behind-the-scenes video from the shoot can currently be seen on Vanity Fair's website.

While the full interview and photospread won't drop until later this month,Vanity Fair tweeted out an image of Jenner onits July cover, just after noon ET on Monday morning.

Ahashtag included with the tweet,#CallMeCaitlyn, rose to become the No. 1 trending topic on Twitter worldwide in less than an hour.

Jenner joined the conversation shortly thereafter, with the launch of her new Twitter account, @Caitlyn_Jenner.

"I'm so happy after such a long struggle to be living my true self," she wrote in her first textupdate."Welcome to the world Caitlyn. Can't wait for you to get to know her/me."

In just one hour, Jenner's verified account had accumulatedmore than 400,000followers, with many congratulating her online.

By approximately 4p.m. ET, Jenner had beat U.S. President Barack Obama's record asthe fastest-ever individualtoreach one million followers onTwitter.

Many onlinehave been usingthe #CallMeCaitlynhashtag to celebrate Jenner's announcement since Vanity Fair's first tweet and to weigh in on which Oscar-winning actresses and models they think she resembles.

It's no coincidence that the No. 2trending topic worldwide right now is "Jessica Lange."

As they've already made clear numerous times, members ofJenner's family supporther decision.

Stepdaughter Kim Kardashian, who announced Sunday that she's expecting her second child with husband Kanye West, was one of the first to seeCaitlyn.

"She was dressed up: beautiful makeup, beautiful hair," Kim said to Access Hollywoodearlier this month, calling Jenner "very, very beautiful."