Mariah Carey and Fergie are to team up for a mega-gig in the Middle East. The two divas will perform in Dubai next week at The Festival, which recently hosted a sell-out Akon show. Carey's show, her second in Dubai, will be her first since she wed Nick Cannon last week. The shows will also mark Fergie's second Dubai show, according to Hollywood.TV. She last performed there as a member of the Black Eyed Peas in 2006.