Watch emotional moment Adele breaks down in tears during live show after spotting Celine Dion in the audience

Adele broke down in tears during her Las Vegas residency last night after spotting her favourite singer, Celine Dion, in the audience.

The 36 year-old singer interrupted her gig at The Colosseum at Caesar's Palace - the same venue Celine debuted her own residency - when she saw the My Heart Will Go On crooner, 56, in the crowd.

As the viral clip circulating the internet shows, Adele was performing her hit When We Were Young when she spotted the icon while walking through the audience.

Adele immediately ran over and pulled Celine into an embrace while tears streamed down her face.

When the Rolling In The Deep megastar returned to the stage, she then gave her fellow diva a shout out.

"Give it up for Ms Céline Dion," she told her fans, while later referred to the French chanteuse as "one of my favourite people of all time."

Nasser, an audience member who recorded the video, told the BBC of the effect the two legends' love-in had on the enraptured audience.

"This truly felt like she was proudly handing the keys to Adele," Nasser said.

"And when Adele gave her that hug, everyone felt what they felt."

Adele has made no secret of her adoration for Celine over the years.

When she went to watch one of her gigs in 2018, she shared it on instagram, writing "Queen Celine."

The Hello singer shared a snap of herself with decked out in her tour merchandise, and captioned the snap: "What a show, an absolute highlight of my life, thank you so much for the attention to your crowd and insane humour. Happy new year lady x.'

And Celine shared the love back, posting her own snap with Adele backstage and adding: "Wasn't able to do all my shows, but was thrilled that Adele came to one of them…. I love her so much!! - Céline xx'."

Celine has been battling a rare neurological condition, Stiff Person Syndrome, in recent years, a battle she chronicled in her recent Amazon Prime documentary, I Am: Celine Dion.

And while the debilitating condition has robbed her of being able to perform, she made a spectacular comeback to the world stage when she performed Hymne à l'amour at the Paris Olympics Opening Ceremony this summer.

Meanwhile Adele returned to Vegas this weekend after a run of shows in Munich, but will soon take an extended break from music.

She has four weekends worth of shows left before her hiatus.

She said back in September: "After that, I will not see you for an incredibly long time and I will hold you dear in my heart for that whole length of my break.

“I have spent the last seven years building a new life for myself and I want to live it now. I want to live my life that I’ve been building and I will miss you terribly.”