SHARON OSBOURNE and MEGAN HAUSERMAN

Megan Hauserman claims Osbourne assaulted her during a recording of the TV show's reunion special in Los Angeles in December (13Dec08).

Osbourne is said to have lost her temper when Hauserman insulted her husband Ozzy, calling the musician a "brain-dead rocker."

The 56-year-old allegedly ran across the stage, grabbed Hauserman by the hair, and scratched her.

Police launched an investigation into the incident, but no charges have been filed.

And now Osbourne is facing a legal wrangle over the alleged scrap - Hauserman filed papers in L.A. County Superior Court on Monday (02Mar09) accusing the star of battery, negligence and infliction of emotional distress.

Hauserman is seeking reimbursement for any medical or legal fees and other miscellaneous "damages," according to Radar Online.

Source: WENN