It's a sad day for Celine Dion.
When news broke that her husband and former manager, René Angélil, died on Thursday at 73 after a long battle with throat cancer, the stars immediately took to social media to share their grief and show their support for the Canadian singer’s family.
WATCH: Inside Celine Dion and Rene Angelil's Enduring 20-Year Love Story
Songwriter Diane Warren, who penned many songs for Dion, including her Grammy-winning hit "Because You Loved Me," thanked Angélil.
Former Destiny's Child member Michelle Williams offered prayers.
Dr. Mehmet Oz, from The Dr. Oz Show, also shared his condolences.
Little Giants actor Devan Sawa, who is also Canadian, said he wished he could give Dion a "big hug."
WATCH: Celine Dion Reveals How Husband Rene Helped Her Return to the Las Vegas Stage
See how other stars paid their respects in the touching messages posted to Twitter and Instagram below.