Megan Hauserman,29 suit filed on Monday in Los Angeles claims battery, negligence and intentional infliction of emotional distress. She seeks a jury trial and punitive damages.
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.
Hauserman was a guest on the television show on December 13 when Osbourne attacked her by pulling her "hair out of her head" and scratching her, forcing Hauserman to seek care at a hospital, according to the lawsuit.
The incident aired on VH1 in January and took place after the two women traded insults over Ozzy Osbourne.
Osbourne's representatives were not available to comment.
On the show, Osbourne served as a headmistress to former contestants from another reality series, "Rock of Love," who after competing for rock singer Bret Michaels' affections get lessons from Osbourne in etiquette and moderation.
Hauserman's lawsuit accuses Osbourne of battery and emotional distress and seeks unspecified damages, money for loss of income and medical costs.
Osbourne, 56, is a fixture of reality TV, and has appeared as a judge on the show "America's Got Talent" and British show "The X Factor," as well as a show that depicts her life as the wife of heavy metal icon Ozzy Osbourne.
related story: Megan Hauserman Sues Sharon Osbourne