The former Pussycat Doll judged alongside Sharon, Louis and Gary Barlow on the 10th series of the ITV show back in 2013, and says she's thrilled to be returning this year.
Nicole, Sharon and Louis will all return to the panel alongside show boss Simon Cowell, who is the only judge from last year who is continuing.
Speaking to ITV's Good Morning Britain, Nicole said: "I'm so excited! I miss England. I haven't been there in a while. It's my second home and I'm happy to be reunited with Shaorn and Louis. I haven't seen them in a while. And Simon, of course!"
Nicole also had a question from Olly Murs, who worked alongside her when he was co-host on Xtra Factor.
Olly wanted to know if she had any new words for this series, following gems like schmazing and schmazeballs.
"I don't know!" she laughed. "You got me on the spot… Olly, just focus on being murrific. That's not a good one. I need to work on it!"
Well, plenty of time until the new series starts!
Watch Nicole talking about X Factor and her charity work below: