Beyoncé is launching her own vegan food- delivery service in the United States. The 'Pretty Hurts' hitmaker, who participated in a meat-free challenge with husband Jay-Z in December 2013 in a bid to adopt 'a healthy lifestyle', has teamed up with her personal trainer, Marco Borges, for the new venture, 22 Days Nutrition, which will provide customers with organic, plant-based, gluten-free, soy-free, and dairy-free meals for three weeks.

The 33-year-old star, who is close friends with lifestyle guru and clean-eating advocate Gwyneth Paltrow, said in a statement: "I am so grateful that I took the challenge and credit Marco with leading by example. He is the most energetic person I know, and it's all because of his decision to live a healthy lifestyle. He came up with a great programme to get people motivated to make better nutritional choices. I am excited to partner with him."

The meals will range in price from $9.76 to $16.50 each, and Beyoncé is confident anyone will be able to stick to the programme.

She said: "All you have to do is try. If I can do it, anyone can."

The Drunk in Love hitmaker and Jay-Z decided to eat vegan food for 22 days shortly before his birthday in late 2013.

The 45-year-old rapper explained the reason for their experiment on his blog at the time, writing: "Psychologists have said it takes 21 days to make or break a habit. On the 22nd day, you've found the way. This all began a few months back when a good friend and vegan challenged me to embrace a 'plant-based breakfast' every day. It was surprisingly easier on me than I thought. It just feels right! So you can call it a spiritual and physical cleanse."