Police say Leah Efay Davis of Provo, Utah, was in a J.C. Penney store when they say she put several items into a bag and walked out of the store. Security stopped her and found she had about $600 worth of goods.
Authorities say she told officers she played the role of Rudy Huxtable, but actress Keisha Knight Pulliam actually played Rudy, the youngest daughter on the 1980s sit-com.
Court records say Davis also claimed she owned the mall in which she was arrested.
The Salt Lake Tribune reports Davis was charged with a felony count of retail theft and a misdemeanor trespassing charge.