Kelly Osbourne says she had 'no idea' how thin she had become following the death of her rock-star father, Ozzy, until she saw a photograph taken during a dress fitting for the awards.

Osbourne says she struggled with her health after the death of her father, Ozzy, last year

Kelly Osbourne says she had 'no idea' how thin she had become following the death of her rock-star father, Ozzy, until she saw a photograph taken during a dress fitting for the…