Christina Aguilera Turned 28th at Osteria Mozza

Christina Aguilera who gave birth to son Max back in January celebrate her 28th birthday hosting a “Clockwork Orange” themed birthday from a few fellow Hollywood A-listers.

The “Ain’t No Other Man” songstress was joined by the fellows like Paris Hilton, Nicole Richie, Joel and Benji Madden, and her husband Jordan Bratman as she converged on Osteria Mozza restaurant for a delicious dinner.