(Photo Credit: Ben Hassett/Harper's Bazaar)

She's an Oscar winner and the face of "The Hunger Games" franchise, but Jennifer Lawrence still has some shocking horror stories from when she first got into acting.

"Somebody told me I was fat, that I was going to get fired if I didn't lose a certain amount of weight," the actress, 23, revealed to Harper's Bazaar U.K. for its November cover issue. "They brought in pictures of me where I was basically naked, and told me to use them as motivation for my diet. It was just that."

Lawrence added that she hasn't forgotten that incident and doesn't hesitate to let people know.

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"They thought that because of the way my career had gone, it wouldn't still hurt me," she said. "That somehow, after I won an Oscar, I'm above it all. 'You really still care about that?' Yeah. I was a little girl. I was hurt."

The candid star, who won the Best Actress Oscar this past year for her work in "Silver Linings Playbook," also said that she'll never let someone treat her that way again.

"If anybody even tries to whisper the word 'diet', I'm like, 'You can go f-k yourself,'" she said.

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Furthermore, Lawrence is fine with her body and jokes that she demands tasty crackers at all times when she's filming.

"My bodyguard Gilbert, right before they call 'action,' I'm like, 'If there aren't Cheez-Its here by the time they call 'cut,' just go home,'" she said. "And he'll start running. It cracks me up how seriously he takes it."

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The November issue of Harper's Bazaar U.K. hits newsstands today.