Olivia captioned thepost: I was diagnosed with breast cancer.

Olivia continued: My sister Sara had just tested negative as well.

That same winter I also had a normal mammogram.

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Two months later I was diagnosed with breast cancer.

I guess I havent felt like there was time to cry.

My focus narrowed and I tabled any emotions that I felt would interfere with my ability to stay clearheaded.

Olivia Munn Posts Tearful Video As She Undergoes Double Mastectomy For Breast Cancer

The fact she did saved my life, the actress wrote.

Luminal B is an aggressive, fast-moving cancer, Olivia said.

She continued: Im lucky.

Olivia Munn Posts Tearful Video As She Undergoes Double Mastectomy For Breast Cancer

We caught it with enough time I had options.

I want the same for any woman who might have to face this one day.

Ask your doctor to calculate your breast cancer risk assessment score.

Olivia Munn Posts Tearful Video As She Undergoes Double Mastectomy For Breast Cancer

Sending you so much love from the depths of my heart, friend.

STRONG-ass mama, Jordan Fisher commented.

Crazy Rich Asians Gemma Chan wrote: Thank you for sharing this.

Olivia Munn Posts Tearful Video As She Undergoes Double Mastectomy For Breast Cancer

Sending so much love and strength to you.

Leslie Mann penned: Thank you for sharing

Minka Kelly chimed in: Olivia.

Thank you for sharing this and in this way.

Olivia Munn Posts Tearful Video As She Undergoes Double Mastectomy For Breast Cancer

You and your strength and vulnerability in equal measure are so beautiful.

Sending you biggest love.

Rumer Willisadded: Sending you so much love little mama, thank you for sharing your vulnerability and strength.

Olivia Munn Posts Tearful Video As She Undergoes Double Mastectomy For Breast Cancer

Jo Koyalso commented: You are going to defeat this 100%.

Slumdog Millionaire star Freida Pinto wrote: You are a warrior Olivia.

Thank you thank you.

Olivia Munn Posts Tearful Video As She Undergoes Double Mastectomy For Breast Cancer

Olivias post ignited more support from people on social media

Olivia Munn Posts Tearful Video As She Undergoes Double Mastectomy For Breast Cancer

Olivia Munn Posts Tearful Video As She Undergoes Double Mastectomy For Breast Cancer

Olivia Munn Posts Tearful Video As She Undergoes Double Mastectomy For Breast Cancer

Olivia Munn Posts Tearful Video As She Undergoes Double Mastectomy For Breast Cancer

Olivia Munn Posts Tearful Video As She Undergoes Double Mastectomy For Breast Cancer

Olivia Munn Posts Tearful Video As She Undergoes Double Mastectomy For Breast Cancer

Olivia Munn Posts Tearful Video As She Undergoes Double Mastectomy For Breast Cancer

Olivia Munn Posts Tearful Video As She Undergoes Double Mastectomy For Breast Cancer

Olivia Munn Posts Tearful Video As She Undergoes Double Mastectomy For Breast Cancer

Olivia Munn Posts Tearful Video As She Undergoes Double Mastectomy For Breast Cancer

Olivia Munn Posts Tearful Video As She Undergoes Double Mastectomy For Breast Cancer

Olivia Munn Posts Tearful Video As She Undergoes Double Mastectomy For Breast Cancer