ABC News' Amanda Keegan reports:

The hottest fashion trend isn't on the runway. It's being dished out on social media, with models sharing their food cravings and concoctions with millions of followers.

Victoria's Secret top model Doutzen Kroes has posted photos of her veggie-packed dinners on Instagram. And fellow Angel Karlie Kloss has posted images of her line of wholesome cookies, which she calls Karlie's Kookies.

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Kloss's friend, fellow model Jourdan Dunn, has her own cooking show - "Well Dunn" - on YouTube. The British model's show has more than one million fans.

So what's all the foodie fuss about?

Danielle Copperman, a certified nutritionist and model, explained that people "want to know what it takes to sort of look like a model.

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"Models nowadays are more like role models, and they want to show people that they are not starving themselves," she added.

The fashion industry has long been criticized for promoting unhealthy and unrealistic expectations of beauty, which critics say lead to eating disorders in girls and women.

Copperman, too, shares all of her natural recipes - including her q'nola, her quinoa granola - on her popular food blog, modelmangetout.com.

"My website is about coming up with recipes to inspire people to eat healthfully and also encourage people to sort of think more and more about what they are eating," she said.

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Among the healthy eating tips she offers, Copperman encourages reader to eliminate processed foods, and to find alternatives to flour, such as seeds and nuts.

She also added one key bit of advice.

"Don't set unrealistic goals that you aren't able to achieve," she said.

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