Jennifer Lawrence might have won an Oscar and seem like she could do it all in the movies but there's one thing that made her feel "vulnerable" - doing a sex scene with married man.

People reports The Hunger Games actress opened up about her "bizarre experience" while filming the raunchy scene with Passengers co-star Chris Pratt at The Hollywood Reporter's 2015 Actress Roundtable.

"I had my first real sex scene a couple weeks ago [while shooting Passengers with Chris Pratt], and it was really bizarre," Lawrence admitted.

Although Lawrence said that "everything was done right" on the set of their upcoming romantic sci-fi drama, she still felt awfully weird.

So how was she able to it? The actress revealed she just got "really, really drunk."

"But then that led to more anxiety when I got home because I was like, 'What have I done? I don't know,'" she added. "And he was married. And it was going to be my first time kissing a married man, and guilt is the worst feeling in your stomach. And I knew it was my job, but I couldn't tell my stomach that."

The scene made her feel "very vulnerable" because she was a confused about "what's too much."

"You want to do it real, you want everything to be real, but then ... That was the most vulnerable I've ever been," she said.

Chatting with other actresses Kate Winslet, Jane Fonda, Cate Blanchett, Brie Larson, Charlotte Rampling and Helen Mirren, the girls at the round table also talked about Hollywood's gender gap issue which Lawrence addressed in her essay last month.

"There's always a backlash in everything that you do, but it's not going to stop or change anything," she pointed out.

"And it's not only an issue in Hollywood. When you're asking about roles for men and women, men certainly have a longer shelf life. Men can play the sexy lead for 20 years longer than we can ... Across all fields, women are generally paid 21 percent less than men."