Reality TV star 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's mother, according to court papers, People magazine reported.

In an answer to the Superior Court lawsuit filed by Sonja Norwood in Los Angeles (Brandy's last name is Norwood), 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 as well as 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, appeared in the sex tape that contributed to Kim's rising fame). Norwood claims Kim later passed on the card number to her siblings, who also allegedly made unauthorized charges.

The Kardashians appear on E!'s hit reality show, "Keeping Up With the Kardashians." The deceased patriarch of the family, Robert Kardashian, was O.J. Simpson's friend and lawyer. Curvy Kim has become a popular pin-up.

Click here for the People report