Chrissy Teigen is known for her supermodel looks, her witty tweets, and her delightfully personal food blog So Delushious. Now the wife of singer John Legend revealed something pretty surprising: she was once fired from a modeling job with a major retailer because she was—get this—fat.

In a behind-the-scenes video with DuJour magazine, she opens up about how the popular chain Forever 21 fired her from a shoot, though she doesn't say when it happened. “They booked me directly when I was much younger. I showed up on set and they asked me if they could take a photo," says Teigen, 28. "And they shoot that photo off to my agency, who then calls me as I’m sitting in the make-up chair, and they say, ‘You need to leave right now. They just said you are fat and you need to come get your measurements taken.’”

Given that run-in with body criticism, it's no wonder Teigen told DuJour that she doesn't like talking about health, diet, and fitness. "That kind of stuff is very private to me, because I feel like when I do end up sharing things like that, maybe it doesn’t work for everybody and everyone has their own opinions," says the 2014 Sports Illustrated Swimsuit Issue cover girl. "So I actually hold things like that pretty close.”

Check out the rest of Teigen's interview, and watch the video below for more tidbits about her relationship with Legend: