Leona Lewis has been asked to sing for Barack Obama at his inauguration ceremony in Washington DC on January 20.

The singer will also be joined by Jay-Z and Beyonce at the ceremony, reports The Sun.

Tickets to the ceremony are exchanging hands for thousands on auction sites and millions are expected to flock to the city on the day.

Lewis previously said of the President-elect: "I think Obama is amazing. He's just so cool and articulate. Nothing fazes him.

"It would mean everything for ethnic minorities in that country and every country around the world to have a mixed-race leader of America."