Christina and Cee-Lo?

Are we about to be treated to a collaboration between Christina Aguilera and Cee Lo Green?

Christina certainly hopes so.

Both are currently celebrity mentors on a new show in America  and that may pave the way for a duet.

Christina says "Cee Lo and I have been trying to work together for a really long time so hopefully something will work out."

The pair are working on a show called The Voice - they are going head to head with each other (and Adam Levine and Blake Shelton) to find the next big thing in music.