Kelly Rowland collapsed onstage in Nigeria on Sunday during the ThisDay Music Festival as a result of dehydration, a spokesperson from her label, Columbia Records, said Monday (July 16). Rowland was taken to a nearby hospital in Lagos and is said to be in good condition. She's scheduled to return to the States on Monday; Shakira, Rihanna, Ne-Yo, John Legend and Diddy were also scheduled to appear at the second edition of the annual festival. ...