Celine Dion shares touching photo for 21st anniversary with René Angélil

Celine Dion often takes to social media to mark special occasions with her loved ones, most recently sharing a sweet snap from her wedding day to mark her 21st anniversary to husband René Angélil. The singer shared the throwback photo of the couple holding hands on Instagram, which she joined in this past October, with the caption "21 years today."

It must have been a bittersweet celebration for the pair as the music producer has been diagnosed with terminal throat cancer. The Canadian singer recently took a year hiatus from her Las Vegas residency to look after her husband during his treatment. Speaking about her family life in November, the 47-year-old revealed that it has been a tough few months but that she is staying positive about her husband’s illness.

TAP TO SEE CELINE AND RENE'S LOVE STORY IN PHOTOS:Celine posted the sweet throwback snap on her Instagram page.

The couple met when Celine was a 13-year-old and Réne became her manager after hearing the teenager sing. The two had a very close working relationship that eventually blossomed into a romance, and despite the 26-year age difference the two married in December 1994. Speaking about the union a year later, Celine said, "I’m not surprised that we married each other, because we have the same dreams. We have the same goals. We respect each other."

Read More: Tender moments from Celine and Réne's 21-year marriage

In 1999 their marriage was tested when the now 73-year-old was diagnosed with throat cancer for the first time. Despite being declared cancer free in 2000, the disease came back in 2013 with devastating results. After having an operation to remove a tumour in his throat Réne was told that the illness was terminal in 2014.

Réne was diagnosed with terminal throat cancer in 2014.

"I’m amazed by him ever more than ever before. I was in love with him the first day, and today I find strength and I learn so much from him," said Celine on Good Morning America.

The couple are looking forward to a relaxing Christmas with their three children René-Charles, Nelson and Eddy.

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