Sharon Osbourne is going to have to face a grilling from lawyers in a lawsuit filed against her by a reality TV star, a US judge has ruled.

At the Los Angeles Superior Court, judge Abraham A. Khan ordered that Osbourne can be questioned by attorneys for Megan Hauserman, a former contestant on Rock of Love Charm School.

Hauserman filed her lawsuit back in March, alleging battery, negligence and intentional infliction of emotional distress.

The court dispute stems from a fight the pair had during a taping of the show last December.

The video shows both women exchanging insults before Osbourne pours a drink over Hauserman and the two are surrounded by security guards who pull the feuding women apart.

The suit alleges the 56-year-old wife of rocker Ozzy Osbourne hit Hauserman, pulled her hair and scratched her.

Some of the pretrial proceedings have been as contentious as the allegations in the lawsuit itself.

Court papers filed by Hauserman’s lawyer allege Osbourne nearly ran over the process server with her car when they arrived at her home in April to notify her of the lawsuit.

The server filed a complaint with the Beverly Hills Police Department and Osbourne was served with the suit as she left a medical clinic in that city, according to Hauserman’s court papers.