Olivia Munn is opening up about her mom's breast cancer diagnosis. The "Your Friends and Neighbors" star, 45, took to Instagram on Wednesday and revealed that her mom was diagnosed with Stage 1 HER2 breast cancer after Munn's own breast cancer diagnosis in 2023.

After Olivia Munn was diagnosed with breast cancer in 2023, she urged her mom and sister to take a risk assessment test.

July 10 (UPI) -- Breast cancer survivor Olivia Munn says her mother Kim is battling the same disease. "My mother was diagnosed with breast cancer," the Newsroom and Your Friends and Neighbors actress, 45, wrote on Instagram Wednesday.