It's a big day for Britney Spears fans.
The singer's seventh album, Femme Fatale, is officially out and Spears just announced a summer co-headlining tour with Enrique Iglesias during her pre-taped appearance on Good Morning America, which aired Tuesday.
"I'm going on tour with Enrique Iglesias in June," the singer told Robin Roberts in an interview backstage.
Spears also performed several new songs, including "Till the World E...
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