Doreen Tracey, one of the Mouseketeers on Disney's original 1950s iteration of The Mickey Mouse Club, has died, according to the AP. She was 74.

Tracey reportedly died from pneumonia on Wednesday at a hospital in Thousand Oaks, California.

The child star auditioned for The Mickey Mouse Club at the age of 12 and remained a member of the show for its original three-season run from 1955-1959 on ABC. Tracey maintained a lifelong bond with Disney, later appearing in a spinoff of The Mickey Mouse Club with host Annette Funicello known as Annette and Disney western Westward, Ho! The Wagons with Disney's Davy Crockett - Fess Parker.

Disney CEO Bob Iger shared his condolences for the former Disney star on Twitter, writing "Rest in peace Doreen Tracey…A true original and an original member of the Mouseketeers. Your Disney family will miss you."