Watch Celine Dion perform her Deadpool 2 theme song LIVE for the first time

Celine Dion made a triumphant return to Las Vegas after being forced to cancel shows in March and April while she recovered from ear surgery. 

The 50-year-old powerhouse singer was back on form and even gave her first live performance of her song Ashes from Deadpool 2, the Daily Mail reports.

"Well, I was recently invited to sing another theme song," she said onstage, before striking a Deadpool pose and earning a round of applause.

"A theme song from a movie called Deadpool 2, which opened at number one at the box office this past week," she continued, over an even bigger hand.

"And I just wanna warn you with something, okay? It is definitely not a children movie. I mean, it's very, very funny, but it's not Tom And Jerry, you know?

• READ MORE: Celine Dion has released her first soundtrack song since Titanic 

"The main man, starring in this movie actually, is an incredibly wonderful and funny, amazing actor - Canadian - Ryan Reynolds,' said Celine warmly.

Sheathed in an off-the-shoulder powder pink dress with sparkling jewel-work, she said of her compatriot: "He sent me this beautiful love song called Ashes. So it gives me great pleasure to sing it for you tonight for the very first time."

Celine's most famous "theme song," of course, is Titanic's Oscar-winning My Heart Will Go On, which surpassed even multi-platinum to become a diamond record.

Her second and current Las Vegas residency, which she kicked off at The Colosseum At Caesars Palace in 2011, will regularly feature Ashes.

She will also integrate the song into her concerts when she embarks on a barnstorming tour of Asia, Australia and New Zealand later this year.

This article was first published on Daily Mail and is republished here with permission.