Kelly Rowland led the tributes tonight as the stars emerged for the Grammy Awards in Los Angeles on the day after Whitney Houston's tragic death.

The X Factor UK judge paid an emotional homage to the 48-year-old icon, saying: 'We lost our hero. I would not be standing here today if it was not for her.'

The former Destiny's Child singer made the comment as the music world mourns the loss of the legendary star on the night of one of the biggest events in the entertainment industry.