Celebrity supercouple Brad Pitt and Angelina Jolie have been spotted househunting in Washington DC.

Jolie spends much time in the US capital carrying out her duties as a United Nations goodwill ambassador and has testified before US congress a number of times this year, speaking on issues including AIDS and developing world poverty.

Jolie currently divides her time between her English country home and Pitt's home in Malibu, California.