THEN: Keshia Knight Pulliam as 'Rudy Huxtable'
Rudith Lillian "Rudy" Huxtable, the youngest of the Cosby family, is best-known for her sassy attitude. The role was originally supposed to go to a boy, but the character was re-written for Keshia Knight Pulliam. —XFINITY Entertainment Staff (Photo: NBC)
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