Mariah Carey Moping After Grammy Loss?

It was Kanye West that warned about how he’d react to losing the Album of the Year award at Wednesday night’s Grammys, but when U2 took home the honor, it was Mariah Carey who was the most upset loser, a source tells The New York Post. The singer refused to come out of her dressing room post-show (though she did do an interview afterwards with Grammy television host CBS). “She ended up back at her hotel with a small group of friends,” a spy revealed, only making a drive-by at her own after party hosted by supermarket billionaire Ron Burkle.