Appearing on The Jonathan Ross Show, former Pussycat Doll Nicole said: "I had Calvin Harris and
will.i.am in the same week text me and say 'Who in the world is Honey G?"
Honey G is the most talked about contestant on the current series of X Factor. She's mentored by Sharon Osbourne in the Overs category and has been getting rave reviews from the judges for her live show performances.
So, how did Nicole reply to her famous friends?
"I was like, 'Really, how do you guys know about Honey G?' She is the talk of the town and she's a lot of fun, she actually did pretty good last week… I mean the public is the one who's keeping her in so far so you never know [how far she might get in the competition].
"She seems really sweet and her mum is really sweet."
Nicole, who mentors the boys this year, also refused to rule out the chance Honey G could win the whole show.
Talking about who has a chance of scooping the recording contract prize (other than her boys!), she said: "I think Gifty is doing really well, Gifty and Honey G… she's so popular, everyone is talking about her and they want to see what she does every week and 5 After Midnight. I think they have a good chance as well."
Nicole's contestant Matt Tery is currently the bookies' favourite, but Nicole said they weren't taking anything for granted. "You never know at this stage. I mean Relley C who I was a really big fan of and she's a beautiful gift, she went away last week and certain people are still in the competition so you just never know but Matt, I have a lot of confidence in him."
She also reminded everyone her other remaining contestant, Ryan Lawrie, is still in the running after landing in the bottom three two weeks in a row but surviving thanks to the public flash vote.
"Ryan is still in, they voted for my little Scottish boy so I'm happy about that."
The Jonathan Ross Show, Saturday 29th October, 9.50pm on ITV