Singer Demi Lovato

• The X Factor: Britney Spears is a tough judge

  Britney Spears doesn't give budding singers an easy time if their renditions of songs aren't up to scratch.

• Demi Lovato writing a country song

  Singer Demi Lovato has tried her hand at country music and says she currently is penning a country song.

• Demi Lovato performs at anti-bullying show

  Singer Demi Lovato joined forces with the Kardashian sisters to stage an anti-bullying rally.