The cast shared their shock over the star's sudden passing.

The late Catherine O'Hara had trouble saying a particularly venomous line to a young Macaulay Culkin in the first Home Alone ...

The death of Catherine O’Hara at 71 prompted an outpouring from the actor’s co-stars and friends over the decades. O’Hara, ...

Macaulay Culkin’s bond with late Home Alone costar Catherine O’Hara endured for more than 30 years prior to her death at age ...

Macaulay Culkin shares an emotional tribute to "Home Alone" co-star Catherine O'Hara following her death, posting a heartfelt ...

Macaulay Culkin is mourning the death of Catherine O’Hara, who played his mother in the “Home Alone,” as well as its sequel, ...

Macaulay Culkin paid tribute to his 'Home Alone' mom Catherine O'Hara after her death: 'I had so much more to say.' ...

Catherine O'Hara's death at 71 has prompted an outpouring of tributes from across Hollywood, with actors, directors, and ...

Macaulay Culkin paid tribute to his friend and former costar Catherine O’Hara after her death. “Mama. I thought we had time,” ...

Pedro Pascal, Macaulay Culkin and more share heartfelt reactions to Catherine O'Hara death with tributes and memories of her ...

Catherine O'Hara, who died Jan. 30, said 'Home Alone' co-star Macaulay Culkin had a 'totally relatable sense of humor' during a Walk of Fame speech.