President Barack Obama shows support for Caitlyn Jenner

President Barack Obama has praised Caitlyn Jenner's "courage".

The US leader has lent his support to the former Olympian and her story.

Responding to a tweet from Caitlyn introducing herself, the president wrote:

It takes courage to share your story. https://t.co/Q7wWjV9Rxx

— Barack Obama (@BarackObama) June 1, 2015

A huge number of stars have spoken out on Twitter to support Caitlyn since her new female identity was unveiled in Vanity Fair magazine yesterday.

Singer Lady Gaga wrote:

Caitlyn, @Caitlyn_Jenner thanku for being a part of all of our lives & using your platform to change people's minds. pic.twitter.com/bFLjt98m2L

— Lady Gaga (@ladygaga) June 1, 2015

The beauty on the inside is now also on the outside. God bless you and the whole family for sharing it with us. 👑 pic.twitter.com/bfO7aFRjbY

— Lady Gaga (@ladygaga) June 1, 2015

Meanwhile, actress Demi Moore praised the 'Keeping Up with the Kardashians' star for her "beautiful authentic self", while Susan Sarandon congratulated Caitlyn on her "rebirth".

Thank you @Caitlyn_Jenner for sharing the gift of your beautiful authentic self inside and out! pic.twitter.com/PZ8NTKR6M4

— Demi Moore (@justdemi) June 1, 2015

Congratulations @Caitlyn_Jenner on your rebirth. You've inspired so much intelligent dialogue and courage.

— Susan Sarandon (@SusanSarandon) June 1, 2015

Chat show host Ellen DeGeneres praised the 65-year-old star for her "bravery" and 'Girls' star Lena Dunham made a joke.

My hope for the world is that we can all be as brave as @Caitlyn_Jenner. pic.twitter.com/WlJmAjv4iv

— The Ellen Show (@TheEllenShow) June 1, 2015

I just want Caitlyn Jenner to take me out and teach me how to drive a stick shift in heels.

— Lena Dunham (@lenadunham) June 1, 2015

Other stars who posted messages of support included Kerry Washington, Jenny McCarthy and Alyssa Milano.