Britney Spears Sings 'Happy Birthday' to L.A. Reid on The X Factor (Video)
Plus: Simon Cowell's out sick, the judges walk out and a contestant is arrested for lifting a mic
Britney Spears Throws Video Game-Themed Party for Her Boys: All the Details
Preston and Jayden celebrated with friends and family at a trampoline park
The X Factor: Is Demi Lovato a Worthy Judge?
Share your thoughts on the show's youngest, less buzz-worthy judge
Britney Spears 'Has Lots of Charm' on The X Factor: REVIEW
From a "mean montage" to a critique of a man from her past, she had her share of memorable moments
Britney Spears Debuts on The X Factor as a Judge
Plus many more of your best Tweets about Spears's debut as a judge on The X Factor
Britney Spears: I'm Not Mean, I'm Honest on The X Factor
The X Factor judge says she learned from the best to tell it like it is
Britney Spears Doesn't Have Cold Feet over Wedding
A source shoots down rumors that the singer pushed back her plans to wed Jason Trawick
Britney Spears Tweets Photo of Her Bikini Body
The singer, who looks stunning in a white swimming suit, says she's not ready for summer to end
Britney Spears and Mars Rover Curiosity Share Tweets
The pop star Tweets at NASA's Curiosity – and the Mars rover writes back
Britney Spears & Demi Lovato Explain Their X Factor Judging Styles
"I try to use constructive criticism," Spears says in a new promo for the singing competition
