Olivia Munn Recalls Crying After Double Mastectomy: ‘I Was Devastated’ Olivia Munn opened up about her battle with breast cancer. Olivia Munn opened up about her battle with breast cancer. RelatedOlivia Munn Reveals ‘Hardest’ Moment After Undergoing Mastectomy During Breast Cancer JourneyApril 18, 2024In "Entertainment"Olivia Munn and John Mulaney Welcome Second Child After Breast Cancer JourneySeptember 22, 2024In "Entertainment"Olivia Munn Reveals If She & John Mulaney Plan on Having More KidsMay 13, 2024In "Entertainment"