Keshia Knight Pulliam, who played Rudy Huxtable on "The Cosby Show," is paying tribute to her onscreen brother Malcolm-Jamal Warner.

Knight Pulliam, who as a child star played Rudy Huxtable on “The Cosby Show,” posted a tribute to Warner on social media over the weekend. The actor, who played her older brother Theo Huxtable on the show, died July 20 in a drowning accident in Costa Rica. He was 54.

The late ‘Cosby Show’ star died while on a trip to Costa Rica, according to multiple outlets. Find out what happened to Warner here.