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

Macaulay Culkin was spotted on Friday, just hours after news broke that his former "Home Alone" co-star Catherine O’Hara had ...

The death of esteemed actress Catherine O'Hara sparked heartfelt tributes from several celebrities and former costars.

Celebrities and Canada's prime minister are reacting to the death of actor Catherine O'Hara, who died Friday in Los Angeles ...

Macaulay Culkin remembered his "Home Alone" co-star mama Catherine O'Hara on Instagram, shortly after her death was announced ...

Macaulay Culkin has taken to Instagram to pay tribute to Catherine O’Hara, the beloved comedic actress who played his mother ...

Macaulay Culkin wrote a moving message to his “Home Alone” co-star Catherine O’Hara following her death at age 71 on Friday. ...

On Instagram, Culkin shared a photo of the two of them from the first Home Alone, as well as a photo from their recent ...

The 45-year-old former child star was spotted looking subdued as he left a meeting at the UTA Talent Agency in Beverly Hills, ...

More than three decades after Home Alone debuted in theaters, Catherine O’Hara reunited with her on-screen son, Macaulay ...

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.

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