Former Nickelodeon star Christy Knowings has died at 46.

Knowings died Tuesday after an asthma attack left her with brain damage, as TMZ first reported.

She joined All That in late 1997 along with Leon Frierson and Danny Tamberelli. They starred in a cast that included Saturday Night Live’s Kenan Thompson and Nickelodeon breakout star Amanda Bynes.

Aside from All That, Knowings appeared in three episodes of Sesame Street alongside her twin brother Chris Knowings.

As a singer, she released her song “To the World” in 2020.

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