Leona Lewis to duet with Robbie Williams

The 24-year-old singer is planning to go into the studio with the 'Heroes' hitmaker this month, and the pair hope to record more than one song together, reported Contactmusic.

"Leona is incredibly proactive. She knows exactly what she wants and where she's heading and is thrilled with these developments. She loves Robbie and thinks he's a real laugh - and the love-in is mutual," a source said.

"They're just going to go in the studio and see what comes out," the source added.

Leona's mentor media mogul Simon Cowell is said to be particularly delighted with the collaboration as he thinks it will help convince Williams to appear as a judge on his UK TV talent contest The X-Factor.

"The track will coincide with her arena tour, with the possibility that Robbie could appear on stage. Simon is really keen on the idea and hopes it will help Robbie come on board with the 'X Factor'," the source added.