Malcolm-Jamal Warner, the actor best known for playing Theo Huxtable on the hit sitcom 'The Cosby Show,’ has died at the age of 54. Warner drowned on July 20 while swimming at Playa Grande near the town of Cahuita,

Actor and director Malcolm-Jamal Warner, best known for his role on "The Cosby Show," has died in an accidental drowning in Costa Rica, where he was vacationing with his family, officials there said. He was 54.

Keshia Knight Pulliam is honoring her former "The Cosby Show" co-star Malcolm-Jamal Warner after his tragic death. In a touching Instagram post on Sunday, Pulliam shared a clip of Warner performing onstage at the City Winery in Atlanta, followed by footage of two young girls, believed to be each of their daughters, walking with a horse on a farm.