When Nicole was speaking on Alan Carr's Chattyman she said she hasn't heard from Simon Cowell since she left the X Factor.
There have been rumours though that Nicole was let go to make room to bring Cheryl back.
When asked if she had any advice for Mel B she said "First of all no-one can replace me. I am joking. Mel has done this before. She does not need any advice. She will spice things up".
Her interview with Alan Carr will air tonight at 10pm on Channel 4.