Gemma Collins belts out Hey Big Spender on All Together Now and fans are stunned

GEMMA Collins belted out Hey Big Spender on tonight’s All Together Now Christmas special - leaving viewers stunned.

The 37-year-old Towie star left the one hundred judges – including Geri Horner – speechless with her rendition of the Shirley Bassey classic.

Gemma kicked off her performance by poking fun at her infamous trapdoor tumble at the Radio 1 Teen Awards in 2017.

She introduced herself by saying: "I'm best known from reality TV and falling off the stage, so let's just hope I don't fall off the stage tonight.”

She wowed host Rob Beckett before she'd even begun singing, telling the crowd: “Oh that is a power stance. Sally sass-hips.”

After Gemma’s performance, 88 of the one hundred judges turned their lights on for her.

Talking to Rob, backing singer Celestina said: “I am fan-girling so hard! You did it brilliantly, well done Gemma!”

Viewers watching at home admitted they had no idea Gemma would sing so well.

One tweeted: “Not Gunna Lie @Missgemcollins Just Smashed It #AllTogetherNow.”

Another added: “Holy mother of god, @Missgemcollins I did NOT expect that, what a powerful singing voice!!!”

While a third tweeted: “Gemma Collins just bossed that wtf!!!! #AllTogetherNow.”

Also competing tonight are Love Island winner Amber Davies, This Morning's Alison Hammond and EastEnders actress Laurie Brett in the festive sing-off.

Completing the lineup are pundit Chris Kamara, rugby player Ben Foden, Outnumbered star Tyger Drew-Honey and comedians Omid Djalili and Sara Pascoe.

Singer Tallia Storm, who released a record with Gemma, previously told The Sun Online she felt the reality star could have a huge music career.

Tallia explained: “She's the next Mariah Carey.

“Gemma is a star who lights up a room when she walks in.