BGT Christmas Spectacular: David Walliams dresses as the Queen

They are set to star in the Britain’s Got Talent: Christmas Spectacular which airs on Christmas Day.

And images released on Thursday tease a glimpse at what is in store for the action-packed show, with all four judges set to perform for the first time in the series’ 14-year history.

One photo shows David Walliams, 49, dressed as the Queen during his comedy routine.

The funnyman gets into character as Her Majesty by wearing a glittering tiara, cream dress which was embellished with beads and navy sash.

Another photo shows David in a tux standing on stage alongside fellow judges Alesha Dixon, 42, Amanda Holden, 49, and Ashley Banjo, 32.

Amanda looked incredible in an off-the-shoulder emerald dress with a daring thigh-high slit, while Alesha rocked a glittering gown with a plunging neckline.

Ashley will once again replace Simon Cowell who is recovering after breaking his back in a nasty electric bike accident.

Hosts Ant McPartlin and Declan Donnelly joined the judges on stage dressed as Christmas elves.

Past Britain’s Got Talent winners will be performing alongside all of the judges as part of the much-anticipated ITV wintery spectacular, according to The Sun.

Amanda will reportedly sing alongside musical theatre group and 2014 winners Collabro, consisting of Michael Auger, Jamie Lambert, Matthew Pagan and Thomas Redgrave.

Pianist and 2017 winner Tokio Myers has also been pegged to return for the festive show to perform Have Yourself A Merry Little Christmas alongside judge Alesha.

It has been said that funnyman David, 49, will be joined by six of Britain’s Got Talent’s former comedians, including fan-favourite Lee Ridley, known by his stage name Lost Voice Guy.

And Ashley will not only be joined by his dance troupe Diversity, who won the contest in 2009, but also street dancer George Sampson, who won the series at age 14 the year earlier.

Britain’s Got Talent’s 2020 series concluded in October with musical comic Jon Courtenay becoming the first ever Golden Buzzer act to win the talent show.

Jon beat runners up Sign Along With Us and Steve Royale to the win, saying afterwards: ‘Just amazing, I can’t believe it. Listen, thank you. You don’t know how much this means.

‘You have changed my life, my family’s life. My mum, I can’t imagine how you’re coping right now. I hope you’re still alive!’

Jon not only bagged himself a slot at the coveted Royal Variety Performance but was also awarded a whopping £250,000 for winning the hit ITV show.