From VIP treatment to box-office bank accounts, celebrities enjoy some amazing perks. But the fame and fortune do come with a downside--namely, an enormous pressure to stay slim. The extremes some glitterati go to? One starlet subsists on baby food, while another actress relies on lemon-juice fasts. A few have resorted to even more drastic measures. Read on as we reveal the 10 craziest celebrity diets of all time.

  1. The Master Cleanse

     Imagine a fast that requires its devotees to subsist on elixirs of lemon juice, cayenne pepper, maple syrup, and water. It's known as the Master Cleanse, and it's what A-listers like Beyonce Knowles and Jared Leto use when they want to lose weight in a hurry. According to experts, however, any pounds they shed are guaranteed to come right back after they're through fasting.

  2. Martha's Vineyard Diet

    It's often said that the say the camera adds 10 pounds--and maybe that's why Howard Stern sidekick Robin Quivers would resort to this ill-advised eating plan. The diet, which promises to shed 21 pounds in 21 days, relies heavily on juices, soups, and supplements, but doesn't include enough protein or fat to be even remotely healthful.

  3. Cabbage Soup Diet

     Stars like Sarah Michelle Gellar turn to this seven-day crash diet when they want to look red-carpet ready. But experts are quick to point that, like all fasts, this one is virtually devoid of vitamins, minerals, and protein; as such, it could be hazardous to your health.

  4. Baby Food Diet

     At some point or another, Reese Witherspoon, Jennifer Aniston, and Marcia Cross have all unleashed their inner child in an effort to drop dress sizes. Did their brains turn to mush? Nobody knows, but either way, nutritionists agree that diets of pulverized baby food are not advisable for adults.

  5. Grapefruit Diet

    Brooke Shields reportedly relies on this super-restrictive eating plan to stay svelte. The verdict from medical experts? It's so limiting and low calorie that it could lead to serious health problems or even result in a long-term eating disorder.

  6. Meal-Replacement Shakes

    Whoopi Goldberg, Courtney Love, and countless others have switched from solid food to shakes in an effort to downsize. While experts say that some shake-based plans are safer than others, in all cases, they're unlikely to create the kind of eating habits that will ensure long-term weight control.

  7. Facial Analysis Diet

     It's hard to believe that anyone would choose a diet based on her face, but that's exactly what Kate Winslet did to slim down after the birth of her daughter. Although there's absolutely no science to back it up, the diet claims that open pores indicate that your diet's too acidic, while undereye puffiness means that your bowels aren't working as they should.

  8. Herbal Tea Diet

     Oprah Winfrey and Rachael Ray have both touted the virtues of diet teas. But according to the FDA, these brews generally contain plant-derived laxatives, which can cause a host of scary side effects, including diarrhea, vomiting, fainting, and irregular heartbeat.

  9. IV Diet

    It sounds too absurd to be true, but according to several sources, some of Hollywood's elite periodically check themselves into hospitals so they can get put on IVs and avoid eating altogether. As of yet, there's still no celebrity spokesperson for this preposterous approach.

  10. "Diet Pills"

     Perhaps the scariest of all weight-loss crazes, some celebrities are popping prescription drugs like Adderall and Clenbuterol to achieve a sleeker physique. Adderall is primarily prescribed to treat ADHD, while Clenbuterol is generally used to treat respiratory problems in horses. Because both temporarily disrupt the metabolism, they might have a short-term slimming effect, but they're likely to lead to weight gain long-term. More important, taking any medication that has not been prescribed for you by a doctor is just about the worst thing you can do for your health.