Dermot stepped down as presenter from the primetime ITV talent show after eight years, and after much speculation, it was finally confirmed last night that Caroline and Olly would be taking his place.
After the news broke last night, Dermot tweeted his good friends, joking: "Huge congrats to @ollyofficial and @carolineflack1 be gentle with the old girl... that's the show, not Louis."
Strictly Come Dancing champion Caroline replied: "@radioleary thank you Dermot.... You're the BEST! A true gentleman and my absolute favourite."
And 'Troublemaker' singer Olly told Dermot he'd be calling him up for tips!
Olly replied: "Aw love ya brother!! Me & @carolineflack1 will be on speed dial every weekend ringing ya."
X Factor is familiar ground for Caroline and Olly, as they previously presented spin-off show The Xtra Factor together for two years on ITV2, and became a popular and much-loved presenting team.
X Factor boss Simon Cowell said in a statement: "I am absolutely delighted Caroline and Olly are both returning to The X Factor. When they were on Xtra together, they were a brilliant double act.
"Since then, Caroline's gone from strength to strength – and Olly has become one of Britain's biggest stars. So now I'm looking forward to them fronting the main show."
Olly and Caroline's stint as co-hosts on the main stage makes them the first ever duo to host the ITV talent competition.
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