U.S. President Barack Obama (L) greets singer Jennifer Hudson (C) during a fundraiser at the Aragon Ballroom on August 3, 2011 in Chicago, Illinois. The fundraiser, billed as a birthday celebration for the President who turns 50 years old tomorrow, featured entertainment by Herbie Hancock, Jennifer Hudson and others. WASHINGTON -- President Barack Obama will be treated to a White House party for his 50th birthday and get away with friends and family to Camp David for the weekend. Obama, who reaches the milestone birthday on Thursday, plans to spend the morning at work as usual in the Oval Office. In the afternoon, senior members of his staff will toast him in a reception in the Blue Room of the White House. And at night, he will celebrate with family and friends, including some coming in for the occasion from his hometown of Chicago. An official said the Obamas will pay for the president's birthday party at the White House. The president will then spend the weekend at Camp David, the private presidential retreat in Maryland's Catoctin (kuh-TAHK'-tin) Mountain Park.