05/13/2008 at 08:50 PM EDT
Kim Kardashian and her siblings denied allegations they improperly ran up more than $120,000 in charges on the credit card used by R&B singer Brandy Norwood's mother, according to court papers.
In an answer to the Superior Court lawsuit
filed by Sonja Norwood in Los Angeles, the Kardashians "deny generally and specifically each and every allegation," the papers say.
Norwood's lawsuit, which also names Kardashian's siblings Khloe, Kourtney and Robert Jr., alleges they ran up the charges in 2006 and 2007. It seeks the return of the money plus 10 percent interest.
Kim Kardashian had access to the American Express card when she worked as a stylist for Brandy in 2004 (Brandy's brother, Ray J, also appeared in the infamous sex tape with Kim). Norwood claims Kim later passed on the card number to her siblings, who also allegedly made unauthorized charges.