The X Factor judge was accompanied by best friend and former Girls Aloud co-star Nicola Roberts, who was there to support Chezza's performance.
Cheryl, 31, took to the stage to sing new track 'I Don't Care', taken from her upcoming album Only Human.
And Nicola was clearly impressed!
Nic tweeted: "Down at Xfactor with Cheryl for her performance tonight. So proud of her and the single is at number 1 on iTunes."
A thrilled Cheryl replied: "Thanks for coming down @NicolaRoberts means a lot to have you there. Love you loads."
'I Don't Care' is the second single to be taken from Cheryl's upcoming fourth studio album, which arrives on 7 November.
The debut track, 'Crazy Stupid Love', debuted at number one on the UK Singles Chart back in July.
Unfortunately for Cheryl, her big night was somewhat marred when her contestant Lola Saunders became the latest act to be voted off X Factor.
Lola was eliminated following her performance on the show's Fright Night episode. She had been in the bottom two alongside band Stereo Kicks.
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Watch Cheryl's video for 'I Don't Care' below: