Megan Hauserman's suit yesterday in Los Angeles claims battery, negligence and intentional infliction of emotional distress. She seeks a jury trial and punitive damages.
The contestant claims Osbourne hit Hauserman, pulled her hair and scratched her.
The December incident can be seen on VH1's Web site billed as "Sharon and Megan's big fight." In the video, the women exchange insults, Osbourne pours a drink on Hauserman and then the two are surrounded by a rush of people.