New Besties! Jennifer Lawrence and Lorde Have Huge Laughs at 'Mockingjay' After-Party

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Move over Taylor! Lorde has a new blonde bestie!

Jennifer Lawrence stunned at  The Hunger Games: Mockingjay - Part 1after-party Monday night in London wearing her Mugler gown -- but in a more candid moment with Lorde, she was laughing her a** off!

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The Oscar winner and Grammy winner were spotted sharing a car from the film's after-party, and JLaw, 24, was having such a good time with her new friend, she didn't even notice that her low-cut dress was about to have a wardrobe malfunction.

VIDEO: Lorde Releases Dance-Filled Video for Mockingjay Track

While Lawrence is the leading lady of The Hunger Games film franchise, Lorde seems to be the movie's leading lady soundtrack-wise. The "Royals" singer has a whopping four tracks on the album and curated the entire lineup of artists featured on the soundtrack. The Mockingjay - Part 1 music includes killer collaborations and musicians such as: Major Lazer feat. Ariana Grande, Haim, CHVRCHES, Charli XCX feat. Simon Le Bon, Grace Jones and a special Kanye West rework of Lorde's "Yellow Flicker Beat."

The video for "Yellow Flicker Beat" was released this past Friday, and has already garnered well over 2 million views on Vevo. 

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While the pop star and JLaw are becoming closer during the promotion of the third Hunger Games sequel, Lorde is still in touch with her other famous friend, Taylor Swift. She even celebrated her 18th birthday with the 1989 singer. Swift Instagrammed: "It's Ella's 18th birthday technically but we all know she's really 300 and knows all the secrets of the universe. #ELLAflickerbeat."

VIDEO: The Final Mockingjay - Part 1 Trailer - Everything We Know

Check out more shots of Lawrence at the big premiere Monday night, below: