Beyonce Knowles vegan restaurant Crossroads West Hollywood

Beyonce and Jay Z are just four days into their 22-day vegan, plant-based diet, but have already tried some of LA's better-known healthy restaurants. On Friday, Beyonce, who looked like she was wearing a faux cowhide sweatshirt, and her main man lunched at Crossroads Kitchen, a trendy vegetarian restaurant in Los Angeles.

And it looks like the twosome is pretty serious about her new diet -- Bey and Jay have been doing a health food tour of the city of Angels this week. The duo started their spree at Real Food Daily in West Hollywood on Tuesday; went to Cafe Gratitude on Wednesday and then we spotted them at Native Foods in Westwood Thursday!

"On December 3rd, one day before my 44th birthday, I will embark on a 22 Days challenge to go completely vegan, or as I prefer to call it, plant-based!" Jay Z wrote on his website, Life + Times. "This all began a few months back when a good friend and vegan challenged me to embrace a 'plant-based breakfast' everyday. It was surprisingly easier on me than I thought..."??

The 44-year-old wrote rapper also wrote that his lady love would be committing to the food challenge, adding, "P.S. B is also joining me."

Jay Z and Bey were in Los Angeles for B's star-studded concert at Staples Center.

We guess if you are going to go vegan -- LA is probably the best place to start. We love our kale and quinoa here!