Former Nickelodeon star Christy Knowings died at 46 after an asthma attack caused severe brain damage, according to TMZ and a family member. Knowings was hospitalized Friday, placed on life support, and died Tuesday night at a Los Angeles area hospital after her family decided to remove the support. Knowings joined Nickelodeon’s sketch comedy series All That in 1997 after appearing in the network’s Rosie O’Donnell special And Now This . During three seasons on All That , Knowings played characters including Penny Lane and Jessica in the recurring “Whateverrr!!!” sketch. What Did Christy Knowings Do After All That? Knowings later appeared in three episodes of Sesame Street alongside her twin brother, Chris Knowings . She also released the folk song “To the World” in 2020, giving fans another glimpse of her creative range beyond Nickelodeon. Knowings is the second former All That cast member reported dead this year. TMZ previously reported that Kianna Underwood died in a January hit and run collision in Brooklyn, adding another painful chapter to the show’s legacy.