Rihanna's boyfriend went voluntarily to LA police station
He is being investigated after alleged incident last night
Brown under investigation after altercation last night
Pop star is afraid for her safety
Singer was hot and dehydrated during show
She's designing more than just umbrellas
Her fired business manager speaks out
Mariah Carey, Mary J Blige also join in
'Umbrella' star will help support UNICEF
The 'Umbrella' star is set to hit the big screen