Could you survive on 110 calories a day? These celebs did…

The fashion world bowed down last weekend when Beyoncé took to the Met Gala red carpet in a sheer Givenchy gown that showed off her figure to perfection.

While it's clear Beyoncé's famous curves are not going anywhere, it was obvious that the singer had shed a lot of weight ahead of the style event of the year. 

A source close to the singer revealed that Beyoncé had turned to the extreme Master Cleanse detox plan, resulting in a total weight loss of around 15lbs.

The Master Cleanse might not be a favourite of nutritionists, considering it involves surviving on a combination of water, lemon juice, maple syrup and cayenne pepper, but it's definitely Beyoncé's go-to diet plan. The 33-year-old previously lost 20lbs for her 2006 role in Dreamgirls by following the same strict menu.

It might sound bizarre, but Bey's not the only one who's embarked on a downright crazy diet plan to shed weight for a movie role or red carpet event. Here are a few other celebs opting for crash diets…

Amanda Seyfried
The actress has spoken out a number of times about the "intense" pressure on Hollywood stars to stay thin, which she calls "twisted." However even she was forced to stay on a strict plan for her role as Cosette in Les Miserables, saying her meals usually consisted of "Spinach. Just spinach. Spinach and some seeds." Delish…

 

Anne Hathaway
The former Oscars host had to drop a huge 25lbs from her already slim frame to play Fantine in Les Miserables. "I was in such a state of deprivation, physical and emotional… It took me weeks until I felt like myself again," she said of her extreme dieting, which involved her living mainly on a paste of porridge oats and water.

 

Victoria Beckham
The mum-of-four embarked on the Five Hands diet to lose weight after giving birth to her daughter Harper. As the name suggests, the diet involves living on just five handfuls of high-protein, high-energy food per day.

 

Nicole Kidman
The Australian actress was asked to lose as much weight as she could for her role in Cold Mountain. She doesn't exactly have any to lose, but she made a valiant effort by surviving on just three hard-boiled eggs a day in the weeks leading up to filming. Plus an extra if she was really hungry, of course.