Saturday, January 18, Barry gathers 500 of his closest friends to party in the White House East Room for Michelle’s 50th birthday Michelle Obama danced into the morning hours with a glittery crowd of 500 that kept the White House’s East Room bumping at the First Lady’s 50th birthday bash Saturday night. Sasha and Malia Obama watched in awe as Beyoncé sang, while elsewhere, Paul McCartney danced and Hillary Clinton