To recap, in order to win a Boobypack Bash* (thrown by angels) for 200 of your closest friends in your city this Spring, do the following:
Instagram a picture of your group wearing said custom packs with the hashtag #BpackCustomChallenge.
Win an insane party at your college or city for you and your friends and be the coolest kids on the block. Winning photo must kill it in the following 2 categories: Creativity and badassness. Winner will be chosen March 30th.