The actress wrote an essay for Lena Dunham's online newsletter called "Why Do I Make Less Than My Male Co‑Stars?"
"When the Sony hack happened and I found out how much less I was being paid than the lucky people with d***s, I didn't get mad at Sony," she wrote. "I got mad at myself. I failed as a negotiator because I gave up early. I didn't want to keep fighting over millions of dollars that, frankly, due to two franchises, I don't need."
Lawrence said that her failure to negotiate stemmed from a desire to be likable.
"I didn't want to seem 'difficult' or 'spoiled,'" she wrote. "At the time, that seemed like a fine idea, until I saw the payroll on the Internet and realized every man I was working with definitely didn't worry about being 'difficult' or 'spoiled.'"
Lawrence admitted that it might be "a young-person thing" but she also added that she does not believe she's the only woman who has faced the issue.
"Are we socially conditioned to behave this way?" she asked in her piece.
Lawrence name-checked her coworkers from "American Hustle" -- Jeremy Renner, Christian Bale and Bradley Cooper -- for negotiating and wrote that they were grabbing great deals for themselves while she was "busy worrying about coming across as a brat."
Lawrence then relayed an anecdote about speaking her mind at work, and being called out for it.
"All I hear and see all day are men speaking their opinions, and I give mine in the same exact manner, and you would have thought I had said something offensive," she wrote. "I'm over trying to find the 'adorable' way to state my opinion and still be likable!"
Don't worry, J. Law -- we think you'll stay likable either way.