The singer is now a household name thanks to his appearance in I'm A Celebrity... Get Me Out Of Here!, but tonight he returned to his roots by taking to the stage at the SSE Wembley Arena in London.
Jake took his place among the finalists for the opening rendition of 'What A Feeling' - and he got one of the biggest cheers of the night!
The 26-year-old was eliminated in week three of the X Factor, but rather than fading into oblivion, he caught a flight over to Australia to make a late entrance in this year's I'm A Celebrity.
And although he was initially worried everyone would think he was a member of the crew, not a celebrity, he went on to place runner-up, just behind Superbike champ Carl 'Foggy' Fogarty!
Jake was clearly looking forward to seeing his old X Factor pals, tweeting today: "On the way to Xfactor can't wait to see everyone... Mental few months... So lucky."
He later added: "Such a good day so far amazing to see everyone."
And, who is Jake voting for to win?! Ben Haenow! He urged his fans to vote Ben to win as he goes up against Fleur East to be named champion of X Factor's eleventh series.
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X Factor's Ben - interview
X Factor's Andrea - interview
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Mel B to miss X Factor final?
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