Beyonce encourages fans to go vegan with 'life' ticket competition

Getty Images Beyoncé on stageGetty Images

Beyonce has offered her American fans the chance to win free tickets to see her and Jay-Z "for life".

The catch? You have to commit to eating more vegan meals.

The offer - which Beyonce has shared with her 123 million Instagram followers - is for one fan only and has a 30-year time limit.

Beyonce is running the competition through the Greenprint Project - which highlights the positive effect veganism can have on the environment.

Fans can submit how many of their meals are plant-based and in return, get the chance to win 30 years worth of tickets.

Allow Instagram content?

This article contains content provided by Instagram. We ask for your permission before anything is loaded, as they may be using cookies and other technologies. You may want to read  and  before accepting. To view this content choose ‘accept and continue’.

Beyonce has long been associated with the vegan movement. The Vegan Society says she's helped make a plant-based diet something to aim for.

She's posted pictures of her food and encouraged fans to join her by opting for a plant-based diet.

Allow Instagram content?

This article contains content provided by Instagram. We ask for your permission before anything is loaded, as they may be using cookies and other technologies. You may want to read  and  before accepting. To view this content choose ‘accept and continue’.

Now she's offering fans the chance to watch her and Jay-Z on tour for life.

The competition is only open to those living in the US but will give tickets to the winner for up to 30 years - and they get to take a guest.

Getty Images Beyoncé and Jay-Z on tour togetherGetty Images

The Greenprint Project site says "we each have the potential to save our planet with our meal choices".

By inputting how many plant-based meals you eat, the site makes various environmental calculations for you.

For example, "by eating nine plant-based meals I could have the environmental impact equivalent to 14 trees absorbing harmful gases from the air in a month," it says.

The prize is estimated to be worth around $12,000 (£9,100), according to the competition website.

Follow Newsbeat on Instagram, Facebook and Twitter.

Listen to Newsbeat live at 12:45 and 17:45 every weekday on BBC Radio 1 and 1Xtra - if you miss us you can listen back here.