Music icon Beyoncé took to Instagram today to promote veganism with a special offer to her 123 million followers. “What is your Greenprint?” Beyoncé posted. “Click the link in my bio for a chance to win tickets to any Jay-Z and/or my shows for life.” Following the link, followers are taken to Beyoncé’s new project, The Greenprint Project, that she created with husband Jay-Z and nutritionist Marco Borges—who she collaborated with on vegan meal company 22 Day Nutrition in 2015. The Greenprint—which is a play on Jay-Z’s 2001 album “The Blueprint”—is a multi-prong plant-based movement that includes a vegan cookbook (with a forward written by the celebrity couple), online resource tool that highlights the benefits of following a plant-based diet, and an upcoming documentary executively produced by Jay-Z that features clinicians, celebrities, musicians, and athletes that promote plant-based living. To enter for a chance to win free Beyoncé and Jay-Z concert tickets for life (a value of $12,000), fans must submit their name and email on The Greenprint landing page before April 22, and a grand prize winner will be selected by May 22.