TMZ.com reports Brandy and Ray J‘s mom Sonja Norwood is suing Kim Kardashian for making unauthorized charges on her American Express card.

According to a lawsuit filed today in L.A. County Superior Court, Sonja Norwood, the mom of Brandy and Ray J, claims in 2004, when Kim K was a stylist, she was given permission to use Sonja’s American Express card to make “one (and only one)” purchase on behalf of Sonja.

According to the suit, Kim allegedly gave the card to other members of her family — Khloe, Kourtney and Robert Jr. The suit claims in 2006, the Ks racked up $62,793.83 in unauthorized charges. And, in 2007, they blew another $57,841.82. The total: $120,635.65!

And get this for audacity: the suit claims the Kardashians charged thousands of dollars in their own stores, Dash and Smooch.

It’s unclear why Sonja didn’t just cancel the card. (Source)