Hayden & Jessica Are HuffPo Happy

Hayden Panettiere and Jessica Alba leave the HuffPost Inaugural Ball at Newseum in Washington D.C. on Monday after celebrating Barack Obama, the incoming President of the United States.

Jessica, 27, was joined by husband Cash Warren. Other guests at the event included: Demi Lovato, the Jonas Brothers and Sarah Silverman.

The inauguration ceremony for Barack Obama, the 44th President of the United States begins at 11:30am EST.