Enrique Iglesias

Enrique Iglesias, Usher and Lil Wayne send a shout-out to "all the dirty girls around the world" on 'Dirty Dancer,' the latest single from Enrique's 'Euphoria' album.

In between her 'Good Morning America' on-stage performances of 'Hold It Against Me' and 'Big Fat Bass' -- shot at the Bill Graham Civic Auditorium in San Francisco -- Britney Spears ecstatically announces to ABC anchor Robin Roberts, and in the company of her dancers, that she plans to co-headline a summer tour with the biggest Latin pop singer in the biz.