Bey has long since endorsed a vegan diet plan as her current detox method of choice, even teaming up with trainer Marco Borges for the 22 Days Nutrition Meal Plan, a plant-centric meal delivery service to accompany Borges' book by the same name. But yesterday on Good Morning America, she finally got real about why she's such a fan—not to mention the insecurities that she has about her body. (Seriously!)

"I am not naturally the thinnest woman," she said. "I have curves. I have struggled with diets and finding something that works for me." Really works, if that  naked dress moment at the Met Gala serves as any proof, though we do think that Beyoncé has always looked phenomenal.

But, she noted, the difference with Borgo's plan is the sustainability factor—and we're not just talking about the Earth-friendliness of forgoing processed foods in favor of whole grains and plants. The reason why Borges' plan is 22 days long is because that is the research-backed length of time it usually takes to establish a habit. In other words, the point of 22 Days Nutrition is that you'll adopt this healthy way of eating for the long haul—unlike, say, Beyonce's Dreamgirls Master Cleanse. (For the record, we tried the meal plan to great results. The Master Cleanse? Not so much, unless you like hunger-induced rage and rebound weight gain.)

"The weight stayed off," she emphasized on GMA. And a smaller waist isn't the only benefit of filling up on nutrient-packed veggies. "I felt like my skin was really firm, a lot more than when I restricted myself," she added.

So there you go—now that we've got her diet and her workout, we're just 22 days from being Beyoncé at the Met Gala, right?

From the editors of ELLE.com

From: ELLE US