Tulisa Contostavlos thinks Nicole Scherzinger is much nicer than Kelly Rowland.
The 'Young' hitmaker insists she could never argue with new 'X Factor' judge Nicole because she is so lovely and has promised she won't fall out with her, unlike with Destiny's Child diva Kelly last year.
Tulisa said: "She's too nice to argue with, you just couldn't. In the beginning me and Kelly used to be like, 'Yeah we get on like a house on fire, there's no problem,' because there wasn't. The minute the problem started was when you saw it on TV. Whereas Nicole's just too nice!"
The 24-year-old star went on to reveal her relationship with Kelly broke down because the 'Commander' singer used to snub her backstage after fights and liked to hold a grudge.
Tulisa told We Love Pop magazine: "If we have an argument on the panel, when I come off Gary will say 'You alright?' and we just grin at each other.
"It's just business. You don't need to bring it backstage. Obviously with me and Kelly, there were times when it went backstage, and we wouldn't talk, which was unfortunate.
"It didn't bother me, though. I was like, 'If you don't want to talk to me, don't talk to me'."
The N-Dubz star added that former Pussycat Doll Nicole has a much cheerier disposition and can always make her laugh by praising the worst acts with her witty one-liners.
Tulisa said: "She'll be like 'You have a really... poetic wardrobe.' She can be hilarious!"