The former X Factor judge, 36, got in the festive spirit when she arrived at the Newcastle event in clothes perfect for the seasonal holiday.
In a furry black and silver crop top with matching mini skirt, the 'Big Fat Lie' singer looked absolutely sch-mazing!
The outfit looked just a little bit like she'd wrapped herself in tinsel, and showed Nicole's famous fun side.
The cute two-piece worn with knee-high suede boots also showed off Nicole's killer legs.
As Nicole headed to the event by train and car, she kept her fans updated on Twitter.
She wrote: "Catching train to #Newcastle! Who's ready for the #Christmaslive @metroradiouk show tonight?! #englishcountryside #windmills."
Later, looking fabulously glamorous in the back of a chauffeur-driven car, she said: "On my way to stage, let's do this #Newcastle #UK glam by @kim.kiefer."
The drop dead gorgeous singer headlined at the Metro Radio Arena, bringing the evening to a close with her number one single 'Don't Hold Your Breath'.
After leaving gig-goers entirely satisfied, Nicole tweeted: "Thankyou #Newcastle! Your #light gives me #life. You were shining like #dancingstars out there tonight. #Run."
Ed Sheeran, Ella Eyre, Becky Hill, Charli XCX, Neon Jungle, Labrinth, Sigma and Clean Bandit also performed at the event.
Earlier this week, Nicole helped boyfriend Lewis Hamilton celebrate after his historic Formula 1 triumph in Abu Dhabi.
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