Christy Knowings, best known for her work as a child actor on the Nickelodeon show “All That,” has reportedly died. She was 46.

“Christy was a multi-talented lady,” her manager, Al Hill, said in a Thursday, Aug. 13 statement to Variety. “Whether it was singing, acting, dancing, she was always creating. Always professional and dedicated to her work.”

A relative of Knowings told TMZ that the actress was hospitalized following an asthma attack on Friday, Aug. 7, and put on life support. The family member told the outlet that she died Tuesday, Aug. 11.

USA TODAY has reached out to Knowings’ management for more information.

The New York City-born actress played various roles, including opposite Amanda Bynes in the recurring “Whateverrr!!!” segment and as newscaster Brenda Stone in “Channel 6 1/2 News,” in her three seasons on the children’s sketch comedy series “All That.”

Knowings was on the program from 1997 to 2000, according to her IMDB page. She also appeared in three episodes of “Sesame Street” between 2008 and 2011, acting alongside her twin brother, Chris Knowings.

‘All That’ costars Kenan Thompson, Josh Server pay tribute

Former Nickelodeon costar Kenan Thompson paid tribute to Knowings in an Instagram post acknowledging that her death “hit hard.”

“Rest well Christy!!! Never could have imagined this day!! Sending so much love to her family!!” he wrote in the caption of a photo of Knowings. “She was a real one and one of the funniest people out here!!! Gonna miss you buddy!!! Show @christyknowings some love y’all!!!”

“All That” alumna Alisa Reyes commented, “May she rest in peace my heart is so sad 🙏🏽.”

Fellow Nickelodeon star Josh Server, who performed alongside Knowings during her stint on “All That,” followed with his own post honoring Knowings.

“This is such devastating news 💔💔💔 Christy was a light in every room and was such a kind soul. And Christy was an absolute scene stealer!!!!!” he captioned a 2024 photo of the two of them in a group of “All That” alumni.

“Every time we performed she made every one around her better. She came in late in our run and never missed a beat. So sad for my whole Nick family. Sending love and prayers to her loved ones. Rest Easy 🕊️”

(This story was updated to add new information.)