will.i.am (William James Adams Jr.)

Career: will.i.am first found fame in the 1990s as a member of the hip-hop group The Black Eyed Peas. As a producer he has worked with artists including Britney Spears, Michael Jackson, Rihanna, Usher and Cheryl Cole. In 2010 he appeared as a celebrity guest judge on The X Factor.

Relationships: He has been linked to Natalie Imbruglia, reality TV star Tila Tequila and Cheryl Cole.

FYI: In 2006 he was contacted by Michael Jackson and asked to produce his next album. They recorded together until Michael’s death in 2009 and will.i.am has said that he will not release any of the music they recorded as Michael would not have wanted unfinished songs released.