While leaving the after party for The Hunger Games: Mockingjay Part 1 premiere in London last night, America's newly-single sweetheart Jennifer Lawrence accidentally displayed some side-nipple.

J-Law was wearing a Mugler dress, and J-Law's nipple was possibly wearing some kind of nipple cover. (Perhaps the Pure Style Girlfriends Smooth'em Nipple Concealer, $14.99.)

But lucky for the star who recently said she hates the Internet (wonder why), Jen had her best girlfriend in tow. Alt-pop's great grandmother Lorde was there to laugh at her boob and help her put it away. (Lorde is on The Hunger Games soundtrack).

Giggle girls!

It must be super weird to be famous, but it's nice to have friends.

[Photos via Splash]