WATCH: Britney Spears Makes Big Announcement and Performs Live on 'GMA'

Britney Spears rocked an early morning crowd in San Francisco on Tuesday, performing on ABC's "Good Morning America" and leaking details on a new tour.

"We're going on tour with Enrique Iglesias in June," announced Britney, who performed her hit single "Hold It Against Me" from her new album Femme Fatale.

The pop diva gave a secret performance in Las Vegas over the weekend at Palms Casino Resort's Rain Nightclub. Britney hit the stage twice on March 25 - once in a ticketed event and another at a midnight show that was open to the public.

Femme Fatale drops today.