The Voice
She'll be working with the man she once described as "so hot, even though he's an octogenarian".
"To be making The Voice UK history is going to be epic..."
"A wife doesn’t forget a time she gets told she’s not a sex symbol," the chart-topping singer is quoted as saying in court documents.
"I don’t want to bulls**t my fans or people who watch the show... did I want to leave? No."
The pair fell out after Olly missed his wedding to compete on The X Factor in 2009.
She'd previously stated that she'd "rather not" return to the singing competition.
Not quite the news Simon Cowell was hoping for.
“My whole brain was a blur of negativity."
"It was difficult to tell him no."
She had been one of the favourites to scoop the $1m prize.