Olivia Munn got vulnerable about filming sex scenes after being diagnosed with breast cancer and undergoing a double mastectomy.

The actor stars alongside Jon Hamm in the new Apple TV+ show “Your Friends and Neighbors.” Munn plays his affair partner in the series, which means the two had to film some intimate scenes together.

“The dynamic between my character and Jon Hamm’s character is a very sexual dynamic,” Munn shared in an interview with Extra! on Tuesday at the New York City premiere of the show. “So it’s really important that we are showing that, and I wanted to be realistic and believable and to leave, like, nothing hidden.”

“But I was nervous because I have scars. I have scars from my double mastectomy,” she shared. “I have scars from lymph node dissection, I have scars from having an oophorectomy/hysterectomy.”

Given the amount of procedures she’s had, Munn said her scars are “not just like, in one little spot here and there.”

But after speaking with Hamm, series creator Jonathan Tropper and the show’s intimacy coordinator, Munn had a profound realization.

“I realized that I was more insecure before I had the double mastectomy,” Munn shared, adding that she was “so proud of my body for getting me through this.”

Munn’s scars are not visible in the series, as she said that it wouldn’t make sense, given that her character doesn’t have breast cancer.

But she has shown the scars before in a Skims campaign that made waves last year. The 44-year-old told Extra! the shoot garnered a response from all kinds of people.

“Not just other women who have the same scars, but I’ve met daughters and sons of, you know, mothers who have it and they say that they look at their mothers’ scars differently now,” she said, adding that she doesn’t “feel insecure about my scars like that anymore.”

Munn has previously opened up about the moment she decided to be “done” with being insecure with her scars while shooting the Skims campaign.

“I was looking in the mirror, and I just thought, ‘I’m done being insecure about my scars,’” Munn said in an interview with NBC’s “Today” show last year. “So I went to the team of Skims and I said, ‘What do you guys think about showing my scars in this campaign?’ And they were so amazing and thoughtful and wonderful. And we talked it out and we decided to do it.”