(HOLLYWOOD REPORTER) — Keshia Knight Pulliam, the actress Americans watched grow up on The Cosby Show as precocious Rudy Huxtable, has signed on to play a prostitute in Tyler Perry’s Madea Goes to Jail. In the big-screen adaptation of Perry’s play, his outrageous matriarch Madea comes to the aid of Pulliam’s hooker Candy, who is being preyed upon by another inmate named Big Sal. Derek Luke has also signed on to the movie, playing Joshua, a lawyer who has a past with Candy. (Hollywood Reporter)