Demi Lovato's Celebrity Friends Continue to Show Support Following Apparent Drug Overdose

Friends of the 25-year-old singer have been sending love her way via Twitter with the hashtag #PrayForDemi.

Demi Lovato's celebrity friends are continuing to show their support.

A number of A-listers started showering the 25-year-old singer with love via social media on Tuesday after news broke that she was hospitalized due to what sources tell ET was a drug overdose. Within a few hours, the hashtag #PrayForDemi was created, featuring thousands of heartfelt messages from fans and industry friends.

The love continued on Wednesday, with a new, fan-created hashtag -- #HowDemiHasHelpedMe -- asking people to share their stories of how Lovato has influenced their lives in a positive way. Meanwhile, stars like Justin Timberlake tweeted directly to the Albuquerque, New Mexico, native, telling her she is "loved."

Luis Fonsi, who Lovato collaborated with on the 2018 track "Échame la Culpa," shared a similar message of love via Instagram, sharing a sweet photo of the two on stage.

"You’re a strong, talented, bright soul and you will overcome this," he captioned the pic. "The world is on your side!"

Ryan Seacrest also weighed in, tweeting, "Sending love, prayers, and strength to @ddlovato and her family. She’s a light and inspiration to many, and we are all wishing her a full recovery."

During his concert at the Xfinity Center in Massachusetts on Tuesday night, Macklemore (who went to rehab when he was 25) showed his love for his "sister in recovery" by dedicating his performance of "Otherside" to her, which was well-received by the crowd. The track, which was released in 2009 and also features Ryan Lewis, addresses drug addiction and being in a "sinking" boat.

A few states away, Charlie Puth dedicated "See You Again" to Lovato while performing to a crowd at the BB&T Pavilion in New Jersey.

See more of the latest celebrity reactions below:

As ET previously reported, a source told ET on Tuesday that Lovato was stable, and "awake and responsive" following her hospitalization. Her rep also released the following statement:

"Demi is awake and with her family, who want to express thanks to everyone for the love, prayers and support. Some of the information being reported is incorrect and they respectfully ask for privacy and not speculation as her health and recovery is the most important thing right now."

Hear more in the video below.

If you or someone you know is struggling with substance abuse, contact the Substance Abuse and Mental Health Services Administration (SAMHSA) National Helpline at 1-800-662-HELP (4357).