The Berenstain Bears (1985)

S2E9 Get Stage Fright

Sister Bear is anxious about forgetting her lines after being selected to star in the school play. Even though Brother teases her, she takes Mama's advice to heart and rehearses diligently until she feels confident. However, when the performance night arrives, it's Brother who experiences a case of stage fright. In a surprising turn, Sister Bear comes to his aid, showing her support and understanding.