The 'Your Friends & Neighbors' star said she and her mom were there for each other for both of their double mastectomy surgeries: "There's something about watching a loved one go through it that is even more heartbreaking.

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

Munn urged others to take the free, online risk assessment that she credits with saving her and her mother's lives.