Britney Spears was upset after the presenter at the American Music Awards made a joke at the expense of her estranged husband Kevin Federline.
Jimmy Kimmel branded Fed-Ex "the world's first ever no-hit wonder" - ouch! - before introducing Brit to present an award. Ever the pro, Britney composed herself and went on stage to present the award, but sources said she was extremely upset that people were getting involved in what will be a bitter divorce battle.
Britney enjoyed another night out with Paris Hilton this week, dressed in a revealing belly-dancing costume for a party thrown by Paris in Hollywood. | 
