Sheer madness!

Jennifer Lawrence was definitely the woman of the hour at last night's premiere of "The Hunger Games: Catching Fire" in Los Angeles -- hitting the red carpet in a see-thru Dior Haute Couture gown that accentuated her impressive physique and killer legs.

And while her new pixie cut has been hit or miss with its styling for previous premieres, she definitely got it right this time. We love how it looks on her here.

She finished her look with a pink lip, black belt, Brian Atwood heels, Anita Ko jewelry and a Roger Vivier clutch.

The actress only posed for photos and signed autographs for fans at the premiere, skipping the press line entirely. She was reportedly sick. 

J-Law was joined on the red carpet by costars Liam Hemsworth, Josh Hutcherson, Elizabeth Banks, Lenny Kravitz and more.

Woody Harrelson also showed up at the last moment, waiting to hit the red carpet after half the press line has already called it a night!

Other celeb appearances included Kylie Jenner, rumored BF Jaden Smith, Willow Smith, Ashlee Simpson, Joe Jonas and more.

Check out all the photos from the premiere above!

"The Hunger Games: Catching Fire" hits theaters Friday.

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