Sir Ian McKellen caused ‘absolute mayhem’ after he made a surprise appearance at the Scissors Sisters’ gig at London’s O2 on Friday.

The iconic actor, 85, sent the crowd wild as he took to the stage to dramatically recite his monologue from the US band’s 2010 track Invisible Light. 

Sir Ian looked dapper in a cream suit and yellow shirt with matching scarf  during the band’s comeback tour celebrating 20 years since their debut album.

Taking to X fans gushed: ‘Absolute mayhem as Sir Ian McKellen does a dramatic reading of his lines from Invisible Light, one of my favourite scissor sisters songs of all time. Cried a little, just so blessed to see this’.

‘Sir Ian McKellen joins Scissor Sisters for Invisible Light onstage at The O2. Iconic tbh’: ‘Scissor Sisters just brought out Ian Mckellen?!’: A concert cameo like no other Sir Ian McKellen has blown The O2 roof off at The Scissor Sisters’ 21st anniversary tour’.

From A-list scandals and red carpet mishaps to exclusive pictures and viral moments, subscribe to the DailyMail’s new Showbiz newsletter to stay in the loop. 

Sir Ian McKellen caused ‘absolute mayhem’ after he made a surprise appearance at the Scissors Sisters’ gig at London’s O2 on Friday

The iconic actor dramatically recite his monologue from the US band’s 2010 track Invisible Light (L-R) Scissor Sisters BabyDaddy, Jake Shears and Del Marquis

It comes after Nicola Roberts  sent fans into frenzy when she made an unexpected appearance on stage with the band in Manchester on Thursday.

The Girls Aloud singer, 39, looked ravishing in a fuchsia draped maxi gown as she stunned the crowd while performing alongside the legendary noughties band.

The English star took to her Instagram page with a dazzling carousel of snaps from the vibrant gig, saying it was a ‘honour’ performing with them and branding it ‘a stunning dream’.

Nicola looked on cloud nine on stage of the Co-Op Live Arena, showing off a glimpse of her toned legs as the glamorous maxi dress featured a racy thigh-high split.

She added a belt while completing the show-stopping outfit with metallic silver knee boots.

Paying a huge tribute to the iconic pop group on their 20th anniversary reunion tour, Nicola performed bangers Take Your Mama and Freedom with them. 

The Biology singer captioned her recent Instagram post: ‘I felt like dancing Thank you for asking me to perform with you last night in Manchester. 

‘Such an honour. I’ve known the boys for a long time and so to get to sing with them was a stunning dream even though my little legs could barely keep up with you Jakey. 

Sir Ian looked dapper in a cream suit and yellow shirt with matching scarf as he took to the microphone during the band’s comeback tour celebrating 20years since their debut album

He later returned to stage for a boogie during the show’s finale 

Taking to X fans gushed: ‘Absolute mayhem as Sir Ian McKellen does a dramatic reading of his lines from Invisible Light

‘The show is incredible. Congrats to the whole team for such a fantastic show and tour. What a night it was ❤️.’

Scissors Sisters’ iconic performance with Nicola comes a few months after the noughties band made headlines after being announced to perform at Glastonbury Festival this year.

The pop band marked the 20th anniversary of their debut album Scissor Sisters, one of the UK’s 40 best-sellers of all time, last year. 

Read More Iconic noughties pop group look unrecognisable after it is announced they will play at Glastonbury

In October, they delighted fans when they announced they would be heading back out on tour together – albeit now as a three piece. 

Their reunion announcement came with a catch as it was revealed Ana Matronix, Paddy Boom and Randy Real would not be joining former bandmates Jake Shears, Babydaddy and Del Marquis.

Earlier in March, it was revealed they will be adding Glastonbury to their list of dates as they will be performing on Saturday June 28 at Worthy Farm.

Scissor Sisters looked unrecognisable compared to their earlier days in a promo sH๏τ for their Glastonbury slot, with Jake swapping his ginger locks for a platinum blonde ‘do.

‘Glastonbury… where it all began,’ they captioned their announcement. ‘Your Scissters are comin’ home—see you in the fields.’ 

It comes after Nicola Roberts sent fans into frenzy when she made an unexpected appearance on stage with the band in Manchester on Thursday 

The Girls Aloud singer, 39, looked ravishing in a fuchsia draped maxi gown as she stunned the crowd in attendance while performing alongside the legendary noughties band (pictured with frontman Jake Shears)

Fans were ecstatic to hear the band would be performing at the festival – however those without tickets held out hope for resale. 

They commented on Instagram: ‘Of course on a year when I didn’t get tickets… Resale it is…,’;

‘I don’t have a ticket, please resale day be kind,’; ‘Will be there!!!! ❤️,’;

‘A MOMENT,’; ‘omg I need to be there ❤️❤️❤️,’; ‘WOW!!!! now this is exciting!!!!!’

Scissor Sisters will play the Saturday which is set to be headlined by Neil Young and the Chrome Hearts with performances from Charlie XCX, RAYE and Doechii. 

The band plan to perform every single track from the album on their upcoming tour, as well as highlights from their three subsequent albums, 2006’s Ta-Dah, 2010’s Night Work and 2012’s Magic Hour.