Spice Girls stars Melanie Chisholm and Emma Bunton have reunited in the recording studio for a new song.

Chisholm recruited her former bandmate Bunton to collaborate with her on a rendition of I Know Him So Well for her upcoming album Stages, and she is delighted with their offering.

In a series of posts on her Twitter.com page, she writes, "I am very proud to announce my beautiful friend Emma Bunton has duetted with me for me (sic) new album Stages... Me and Emma Bunton and have recorded the fantastic, 'I know him so well'... Singing together again is amazing and emotional. Love you baby!"

Bunton adds, "so excited, love you lots!!! Being back in the recording studio with the amazing MelanieC... was emotional and brought back so many memories!!!! Loved it!!"