Showbiz
Rex Features
Osbourne, who co-hosts VH1's Rock of Love: Charm School, grabbed contestant Megan Hauserman by the hair and refused to let go, according to TMZ.
The former X Factor judge was said to be furious after 26-year-old Hauserman accused her of only being famous for managing a "brain dead rock star" - a reference to her husband Ozzy Osbourne.
A spokesperson for the Los Angeles Police Department said Osbourne is a suspect in a "minor battery" but no charges have yet been filed.
Osbourne's spokesperson has yet to comment.
Rock of Love: Charm School gives contestants the chance to learn the rules of etiquette in a bid to win a cash prize.
More: Sharon Osbourne, Showbiz
Related Stories
Ten Things About...
Ten Things About... Ridley ScottWe find out ten fast facts about the English producer and director.
Interviews
'Angels' Share' Ken Loach interviewKen Loach, Paul Laverty and Paul Brannigan on their whiskey-soaked comedy.
Fashion & Beauty
Duchess of Cambridge's memorable momentsFlick through a gallery of Kate Middleton's stand-out public appearances.
Celeb Birthdays
Marilyn Monroe: Life and career in picsFlick through our gallery on what would have been Marilyn's 86th birthday.
