Keshia Knight Pulliam has made a promise to her late television 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.

Keisha 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.