Catherine O’Hara — best known for her roles in Schitt’s Creek, Home Alone, and Best in Show — has died at the age of 71, according to TMZ. The outlet reported that the beloved actress passed away on Friday, citing two sources with direct knowledge of the situation. Her cause of death has not been publicly confirmed.

O’Hara became a household name for generations of viewers through her portrayal of Kate McCallister, the determined and frantic mother of Kevin McCallister, played by Macaulay Culkin, in the first two Home Alone films. Her performance helped anchor the franchise emotionally and remains one of the most recognizable roles of her career. Years later, she introduced herself to a new wave of fans as the unforgettable Moira Rose on Schitt’s Creek, appearing in 80 episodes and playing a central role in turning the series into a cultural phenomenon.