British singer Kelly Osbourne, daughter of heavy metal star Ozzy Osbourne, says a member of her family has tested positive for HIV.
"This charity is really important to me because one of my family is HIV positive. And I am so, so proud of him," she said during the concert.
The TV personality and other members of the Osbourne family had been introducing a performance by the Scissor Sisters at the time.
Photographers at the concert reported that she started sobbing before leaving the stage, Sky News said.