Watch the MTV Promo That Launched Jennifer Lawrences Career

At least now we know -- the best thing to come out of MTV's obnoxious, greed-advocating reality TV show "My Super Sweet Sixteen" is the birth of Jennifer Lawrence's acting career.

The two-time Oscar nominee and star of Silver Linings Playbook was once a promo gal for MTV. She starred in the commercial as a spoiled blonde teenager who gets enraged when a disco ball smashes her cake (who wouldn't?).

And while her humble roots barely resemble the butt-kicking archer Katniss Everdeen who we've all grown to love in The Hunger Games, J-Law hasn't forgotten where she got her a start.

SEE ALSO: Jennifer Lawrence GIF Reactions to Oscar Nominations

When she took home a Screen Actor'…
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