Accustomed to being paid for doing absolutely nothing, reality television performance artist Heidi Montag refused to attend her own sister's birthday without compensation. What's the union rate for siblings?

Heidi and Spencer did not attend Holly Montag's 26th Birthday at Empire Hollywood in Los Angeles on Saturday night after cash demands were not met.

To make matters worse, Stephanie Pratt was arrested for a DUI after the party. It's not the first time she's been arrested either, in May 2006 she was picked up in Hawaii for second-degree theft and drug violations.

Stephanie and Holly better start saving up to pay for Heidi's eventual bridesmaid services.