Katy Perry, Kim Kardashian West and Ellen DeGeneres have voiced their support for pop singer Demi Lovato.
The 25-year-old is in a Los Angeles hospital receiving treatment for a suspected drug overdose.
Lovato was found unconscious at her home on Tuesday and was treated at the scene.
Famous friends of the star have been posting on social media, whilst thousands of fans have been using the "Pray for Demi" hashtag.
They have included former Disney co-stars Nick and Joe Jonas, who starred alongside her in the 2008 film Camp Rock and enlisted her as a support act on the Jonas Brothers World Tour in 2009.
Like all of you I am reeling at the news about Demi. All of us love her and need to pray for her to get well. She is a fighter. #prayfordemi— Nick Jonas (@nickjonas) July 25, 2018
A number of artists also gave their support, including friends and collaborators Katy Perry, Clean Bandit, Ariana Grande and Kesha.
love & strength to you @ddlovato we’re all here for you baby girl ♥️— KATY PERRY (@katyperry) July 25, 2018
i love u @ddlovato— Ariana Grande (@ArianaGrande) July 24, 2018
We love you Demi @ddlovato . All our thoughts and prayers are with you.— Clean Bandit (@cleanbandit) July 24, 2018
I love @DDLovato so much. It breaks my heart that she is going through this. She is a light in this world, and I am sending my love to her and her family.— Ellen DeGeneres (@TheEllenShow) July 24, 2018
Addiction is not a choice.My heavy heart sends healing love to @ddlovato, and I pray she recovers fully and with great health. 💛— Tyra Banks (@tyrabanks) July 24, 2018
Dear @ddlovato you are a force to be reckoned with and stronger than you think. We’re all here for you ❤️— DUA LIPA (@DUALIPA) July 25, 2018
High profile figures also talked about the addiction problems Demi had faced and offered their love and prayers, including TV hosts Ellen DeGeneres and Tyra Banks.
Sending lots of light and prayers to you baby girl @ddlovato ✨— Kim Kardashian West (@KimKardashian) July 25, 2018
We love you Demi Lovato ❤️❤️— iamcardib (@iamcardib) July 24, 2018