When it comes to staying slim, these celebrities will do just about anything.
Which celebrity eats baby food when she wants to lose a few points? And which actor ate nothing but fruit?
See below for 18 celebrity diets you won't believe!
Megan Fox: The Vinegar Diet
Who needs shots of tequila when you can take shots of vinegar? Megan Fox takes a shot of apple cider vinegar each day to stay healthy and reduce water weight.
Beyonce: Lime Juice and Maple Syrup
Beyonce's diet of choice is a Master Cleanse, which includes a concoction of lime or lemon juice, maple syrup, cayenne pepper, and water. How often? Try 6-12 imes a day for 14 days.
Ashton Kutcher: The Fruitarian Diet
To prepare for his role on the film, Jobs, Ashton Kutcher followed a diet that Steve Jobs did. Just like it sounds, the fruitarian diet pretty much only allows you to eat fruit. It's such a bad idea, it landed Kutcher in the hospital.
Christina Aguilera: The 7-Day-Color Diet
This diet only allows you to eat one color of food each day. Green one day, purple the next, and so on. Christina Aguilera is a fan of it, but I think most of us will pass.
Uma Thurman: The Raw Food Diet
Yep, it's just what it sounds like. This is a popular celebrity diet in which you can only eat raw foods -- nothing can be cooked above 115 degrees. For real.
January Jones: Placenta Pills
There's a science behind this one, but it still seems pretty weird. January Jones had her placenta turned into pills to help lose weight after giving birth to her son.
Nicole Kidman: Eggs, Eggs, and More Eggs
When Nicole Kidman needs to drop a few pounds, she fills her plate with some delicious hard-boiled eggs. Lots and lots of them.
Renee Zellweger: Ice, Ice, Baby
Renee Zellweger has a simple plan when she needs to shed some pounds. She just eats ice cubes to help her feel full.
Brooke Shields: The Grapefruit Diet
Brooke Shields stays slim with The Grapfruit Diet, which involves eating half a grapefruit before each meal. Yum.
Well, if you like cookies, maybe this one is for you? Snooki apparently likes her diet of six cookies a day, then just one full meal.
Jennifer Lopez: Grapefruit Oil
This one seems way too good to be true. Jennifer Lopez's strategy for keeping thin? Just sniff a little bit of grapefuit oil. No big deal.
Matthew McConaughey: Liquid Only
To lose weight for his role on The Buyers Club, Matthew McConaughey stuck to a liquid only diet. Talk about extreme.
Sarah Michelle Gellar: The Cabbage Soup Diet
When Sarah Michelle Gellar needs to drop a few pounds, she turns to a diet of cabbage soup for seven days. Luckily, she does include a few other select fruits and veggies throughout the day, too.
Elizabeth Hurley: Watercress Soup
When Elizabeth Hurley needs to drop a few pounds, she swears by a diet that includes at least six cups of watercress soup a day. Snooki's cookie diet is probably more enjoyable.
Jennifer Aniston: Baby Food
Jennifer Aniston isn't the only celebrity who swears by "the baby food" diet. She eats 14 servincs of baby food a day, along with one regular meal.
Katie Holmes: Carrot Soup
Katie Holmes go to diet when she needs to lose weight? Carrot soup for breakfast and raw broccoli for both lunch and dinner.
Christian Bale: Coffee and Tuna
To lose weight for The Machinist, Christian Bale stuck to a strict diet of water, coffee, tuna, and apples.
Lady Gaga: Bring on the Alcohol
Somehow, this one isn't all that surprising. When Lady Gaga goes on a diet, she drinks whiskey while working out. The real committment comes from the fact that she works out even if she's hungover.