How'd you like to see Beyonce and Jay-Z in concert for free for the rest of your life?
All you need to do is go vegan.
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In collaboration with "The Greenprint Project", Bey and Jay are urging their fans to adopt a plant-based diet.
Fans can enter their names and email addresses on the site to enter.
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Beyonce herself pledged to eat plant-based breakfasts and go meatless on Mondays, while Jay-Z is promising to eat two plant-based meals each day.
And if fans sign up, they could win those lifetime tour tickets - which are actually only valid for 30 years.