Here's a very important piece of the Hunger Games puzzle!

Us Weekly has piece number 21 out of 100 of the Hunger Games online puzzle. To celebrate the fact that in just under 100 days, The Hunger Games hits theaters (Mar. 23, 2012) 100 different websites have been given 100 different puzzle pieces.

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What do you need to do to unveil the poster?

- Search Twitter for the #HungerGames100 hashtag

- Collect all 100 pieces and solve the puzzle

- Upload a photo of your poster to and @tag The Official Hunger Games Movie Page. 

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Be sure to download the official PDF puzzle piece to put it together.

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