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Two of our favorite social networking platforms are about to join forces! Today, Facebook announced it bought the photo sharing app Instagram for $1 billion, and we suspect that means posting Instagram photos on Facebook is about to get a lot easier. Instagram, which was named iPhone app of the year in 2011, currently has 30 million subscribers—including InStyle. And we want you to follow us! Find us at instylemagazine, where we upload photos of everything from the Olsen twins at fashion week to Nina Dobrev interviewing Donna Karan. See you on Instagram!

Plus, see our favorite tech accessories.

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In exactly 100 days, we’ll finally get to see The Hunger Games brought to life on the big screen. To celebrate this milestone, the studio behind the hotly-anticipated flick has created the #HungerGames100 Poster Puzzle Hunt, and they asked us to be a part of it! 100 puzzle pieces have been scattered across the Internet—be the first fan to find them all, put them together and post a photo of your masterpiece on Facebook (don’t forget to @tag The Hunger Games‘ official Facebook fan page) and you’ll unlock the new movie poster for everyone to see. Now here’s where we come in—Click here to download puzzle piece #39 and you’ll be one step closer to completing your mission. Not sure where to look for the next piece? Try searching for the #HungerGames100 hashtag on Twitter. May the odds be ever in your favor!

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• The Hunger Games: Designers Sketch the Fire Dress!
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Update: Hunger Games super-fan @johnshoward was the first person to complete the puzzle challenge. See the poster (which shows us Katniss’ cool side braid from a different angle!) after the jump.

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