The actress unveiled the new hairstyle on Wednesday (November 6) while travelling to The Hunger Games: Catching Fire's 'Global Fan Day' festivities.
Lawrence joked about her new look during a Q&A session with Yahoo in Sunnyvale, CA.
"I cut it earlier and it grew to like here (shoulder length) and then it grew to that awkward gross length and I just kept putting it in a bun and I thought, 'I don't want to do this' so I just cut it all off," she explained.
Lawrence added when a fan complimented her hair: "It couldn't get any uglier [before]!"
The actress also revealed that her Hunger Games character Katniss Everdeen will not be seen in a similar short hairstyle in future films.
Her co-star Josh Hutcherson recently made headlines for referring to Lawrence as "a great kisser" and "many a man's desire".
The Hunger Games: Catching Fire opens in the UK on November 21 and in the US on November 22.
Watch a trailer below:
'The Hunger Games: Catching Fire' - gallery: