Brandy’s mom is not a happy camper with the “Keeping up with the Kardashian” girls. Reality star Kim Kardashian and three siblings racked up more than $120,000 on Sonja Norwood’s American Express card, according to a lawsuit filed yesterday that was obtained by Pagesix.com. The suit, which also names Kardashian’s siblings Khloe, Kourtney and Robert Jr., alleges they ran up the charges on Norwood’s card while Kim worked as Brandy Norwood’s stylist in 2004. Norwood said Kim was authorized to make one purchase in 2004, but passed on the credit card number to siblings who used it for additional purchases in 2006 and 2007. It seeks the return of the money plus 10 percent interest. Kim Kardashian’s lawyer would not comment. However, Kim Kardashian denied the allegations, saying that she and her siblings had Norwood’s permission to make the purchases. “We have her signature on all items,” Kardashian says.