Aguilera and Jordan Bratman celebrate her birthday with a Clockwork Orange-themed West Hollywood bash. Plus: Jen & John, Kanye West, Robert Pattinson, J.Lo and more

AMERICAN BANDSTAND

File under unlikely duet partners: Kellie Pickler teams up with Kid Rock to entertain the troops during the 2008 USO Holiday Tour at a military base in Kandahar, Afghanistan, on Wednesday.