Céline Dion fulfilled a fan's "childhood dream" by duetting with him outside her Paris hotel ahead of a highly anticipated comeback performance. The 20-year-old fan, known online as 'Sacha', had asked the pop star to sing with him.

Dion, who has been interacting with fans gathered outside her hotel, initially declined the request but ultimately couldn't resist joining in. "You are such a good singer," she exclaimed to the fan.

The impromptu performance comes as Dion prepares for a comeback show on Saturday. The singer was diagnosed with an incurable condition four years ago, which has affected her singing voice. In March, she announced her upcoming tour dates on Instagram, stating, "I'm so ready to do this."