See Pam Anderson Through the Years

Christie Brinkley

The 63-year-old has been a vegetarian since the age of 13, and she told the L.A. Times that she believes her diet is a good defense against disease. "I call it my rainbow diet," she said. "I like to encompass as many colors as I can in a day because at some point, you always get these news reports that everything gives you cancer. I think that it’s really benefitted me to have had this lifetime of healthy eating behind me. It’s been a great foundation."

Tia Mowry

The actress lost an impressive 20 pounds by following her own cookbook, Whole New You: How Real Food Transforms Your Life, for a Healthier, More Gorgeous You. The cookbook includes more than 100 recipes, such as "lighter" versions of comfort food recipes, like 'Buttermilk' Fried Chicken and Crispy Collard Chips. Um, yum!

Carrie Underwood

The country star once said that she is actually 95% vegan. While she allows herself to indulge in cake at birthday parties, she focuses on eating clean foods and avoids animal products.

Gwyneth Paltrow

While she mostly sticks to organic foods and snacks, she allows herself to cheat once in a while.

“For me the big things are really processed food and foods that have tons of chemicals and pesticides. I try to stay away from that, but I love French fries and cheese and martinis and all that kind of thing,” she said.

Pamela Anderson

She follows a strict vegan diet, especially since she was never a fan of meat. But she also explained that eliminating dairy has worked wonders for her body.

“After I removed dairy I felt like a new person. Everything improved. My digestion, my skin, hair. It just doesn’t belong in our bodies,” she explained.

Dolly Parton

The singer limits her carbs when it comes to her daily meals, but she treats herself once in a while!

"I have to stay on a low-carb diet when I'm on the road because my show clothes are so tight and I can't afford to gain like I used to in the past... I have to work at it cause I'm a little old thing. I'm just 5'1" and I still have that country girl appetite, so I have to watch it. I just cheat on holidays and special days and then eat the things I really love," she said.

Adele

She has always been pretty vocal about the fact that she doesn't want to be a size zero, but the "Hello" singer still wants to be in good shape.

She shed over 30 pounds by following the popular Sirtfood Diet, where you consume foods that can help regulate your metabolism. In other words, she ate mostly plant-based foods and veggies.

Victoria Beckham

The former Spice Girl follows the alkaline diet, which actually aims to keep your body's pH between 7.35 and 7.45 (or slightly alkaline). She eats alkaline-rich foods that are easy to digest, including veggies and fruits, while limiting more acidic foods like poultry, fish, and eggs.

She swears by the Honestly Healthy cookbook by Natasha Corrett and Vicki Edgson, which includes recipes to keep your body’s pH balanced. She even tweeted: “Love this healthy eating cookbook!”

Eva Mendes

The actress loves to include a type of grain in all of her meals, and often times, lunch and dinner are the same.

"I grew up eating rice and beans, so I want some kind of grain in every meal. For lunch, I usually have salmon and rice or quinoa, and I try to include a salad. I’ll eat the same thing for dinner. I’m a creature of habit in that way," she explained.

Madonna

To stay in shape, the pop star follows the macrobiotic diet. It focuses on achieving balance and inner peace through healthier meals, which mainly consist of organic whole grains, vegetables, and legumes. Followers of the diet usually avoid dairy, processed foods, meats, and tropical fruits.

“Macrobiotics is not a diet, it’s a way of life,” Madonna’s former personal chef Mayumi Nishimura said.

Jennifer Lopez

The singer follows an unprocessed, veggie-heavy diet and always avoids caffeine and alcohol. It's no wonder why she's always glowing!

“It's all organic and it’s all very well thought out, with the balance of very high quality proteins and a lot of nutrient-dense food,” her personal trainer Tracy Anderson said.

Mariah Carey

The singer makes sure to eat a lot of protein each day.

"It's really hard. My diet, you would hate it. All you eat is Norwegian salmon and capers every day. That's it... I'm actually serious, I try to stick with the proteins. It's the worst!" she said.

Katie Holmes

When it comes to her meals, the actress incorporates a lot of fruits and vegetables without limiting herself.

“I try to be healthy and eat fruits and veggies, but I enjoy going out to dinner and having french fries like everyone else. And good guacamole,” she said.

Alyssa Milano

In order to shed her baby weight, the actress followed the Atkins low carb diet, which focuses on limiting the intake of sugar and carbohydrates. She's now a spokesperson for the brand!

“This journey with Atkins is about me feeling better overall, having more energy and reaching my happy weight,” she said.

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