Artists including British pop band Florence and the Machine, US pop singer Colbie Caillat, pianist Herbie Hancock and singer-songwriter Elvis Costello will also perform at the December 11 show.
Washington said on Thursday he was "honoured to attend" the Nobel Peace Prize Concert "to help spread the message of global peace".
Last year, actor Will Smith and his actress wife Jada Pinkett Smith co-hosted the concert, honouring the 2009 laureate and Smith fan Barack Obama.
The winner of the 2010 Nobel Peace Prize will be announced in Oslo on October 8. The award is presented on December 10.
Angelina Jolie has revealed to the New York Times that she recently underwent a procedure to remove her fallopian tubes and ovaries. Read More »
Nelson Mandela presidential memoir, sequel to Long Walk to Freedom, to be published in 2016 Read More »
Day 4 in pics!
5 hyperlapse videos!
Day 2 in pics!
Day 1 in pics!
You won't believe how much someone was prepared to pay for this burger!
South AfricaR500 000 - R600 000 Per Year
South AfricaR500 000 - R800 000 Per Year
HousesR 1 400 000
HousesR 4 700 000
HousesR 1 880 000