AUTOPLAY 

The M-Plan Katy Perry and Kelly Osborne are fans of the M-Plan, a diet heavy in mushrooms, The Daily Mail reports. The diet claims it helps women shed fat in the waist, hips and thighs -- but not the bust. (Anthony HarveyGetty Images)

The M-Plan

Katy Perry and Kelly Osborne are fans of the M-Plan, a diet heavy in mushrooms, The Daily Mail reports. The diet claims it helps women shed fat in the waist, hips and thighs -- but not the bust. (Anthony Harvey/Getty Images)
The Alkaline Diet How does Posh maintain her super-slender physique According The Mirror and other sources, its with the Alkaline Diet. The goal of the diet is to achieve an optimal pH balance in the body, by avoiding sugar, pasta, white rice, caffeine and meat, which cause your body to produce acid. (Mike CoppolaGetty Images)

The Alkaline Diet

How does Posh maintain her super-slender physique? According The Mirror and other sources, it's with the Alkaline Diet. The goal of the diet is to achieve an "optimal pH balance in the body," by avoiding sugar, pasta, white rice, caffeine and meat, which cause your body to produce acid. (Mike Coppola/Getty Images)
The Vegan Cleanse When Q Bee and Jay-z showed off their toned figures at the 2014 Grammy Awards, they attributed their slimmer bodies to a 22-day vegan diet. (Mike CoppolaGetty Images)

The Vegan Cleanse

When Q Bee and Jay-z showed off their toned figures at the 2014 Grammy Awards, they attributed their slimmer bodies to a 22-day vegan diet. (Mike Coppola/Getty Images)
Macrobiotic For four years, Gwyneth Paltrow preached the powers of a macrobiotic diet. The diet encourages grains and local vegetables as staple foods and prohibits highly-processed or refined foods. (Theo WargoGetty Images)

Macrobiotic

For four years, Gwyneth Paltrow preached the powers of a macrobiotic diet. The diet encourages grains and local vegetables as staple foods and prohibits highly-processed or refined foods. (Theo Wargo/Getty Images)
The Cabbage Soup Diet Sarah Michelle Gellar likes to slay the pounds with a seven-day cabbage soup diet. (Jason MerrittGetty Images)

The Cabbage Soup Diet

Sarah Michelle Gellar likes to slay the pounds with a seven-day cabbage soup diet. (Jason Merritt/Getty Images)
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The Perricone Diet Celebrities, such as Julia Roberts, Cate Blanchett and Kim Cattrall, are fans of the Perricone diet -- a diet rich in lean proteins, antioxidants and omega-3s. The diet claims to have anti-aging benefits, The Daily Mail reports.

The Perricone Diet

Celebrities, such as Julia Roberts, Cate Blanchett and Kim Cattrall, are fans of the Perricone diet -- a diet rich in lean proteins, antioxidants and omega-3s. The diet claims to have anti-aging benefits, The Daily Mail reports.
The 5-Factor Diet Eva Mendes, Mandy Moore and Jessica Simpson have all tried the 5-Factor Diet, which revolves around the number five You eat five-ingredient meals, five days a week, and complete 25-minute workouts, five times a week.

The 5-Factor Diet

Eva Mendes, Mandy Moore and Jessica Simpson have all tried the 5-Factor Diet, which revolves around the number five: You eat five-ingredient meals, five days a week, and complete 25-minute workouts, five times a week.
Weight Watchers Jennifer Hudson and Jessica Simpson both counted points with Weight Watchers to shed the pounds. And both have been spokespeople for the company. (Dimitrios KambourisGetty Images)

Weight Watchers

Jennifer Hudson and Jessica Simpson both counted points with Weight Watchers to shed the pounds. And both have been spokespeople for the company. (Dimitrios Kambouris/Getty Images)
Meet Spinosaurus

Meet Spinosaurus

It's the stuff of nightmares and it's now on display in D.C.
2014 Baltimore Comic-Con

2014 Baltimore Comic-Con

Superheroes descended on the Inner Harbor for Baltimore Comic-Con.
Sharks: Did You Know...

Sharks: Did You Know...

A list of things you might not know about these underwater predators.
The Joker turns 74

The Joker turns 74

The Joker is celebrating 74 years of torturing the caped crusader.
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