Extreme diets to lose weight fast

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Ashton Kutcher - "jOBS"

For his role as Steve Jobs in "jOBS, " Asthon Kutcher adopted a frutarian diet to copy that of the one followed by the Apple founder. Eating only fruit reportedly caused him to be hospitalized for pancreas problems just a couple of days before filming began.

Anne Hathaway - "Les Miserables" and "The Dark Knight Rises"

Anne Hathaway used a 500 calorie-per-day diet of radishes and hummus to drop pounds to play prostitute Fantine in the "Les Mis" remake. She also says she lived off of "kale and dust" to lose weight for her role as Catwoman in "The Dark Knight Rises."

Natalie Portman - "Black Swan"

Beyonce - "Dreamgirls"

Beyonce lost weight for her role as Deena Jones in "Dreamgirls" by using the Master Cleanse diet. The diet consists of a mixture of lime or lemon juice, maple syrup and cayenne pepper that is added to water. She also said she ate vegetables but consumed nothing else.

Christian Bale - "The Machinist"

Christian Bale lost an extreme amount of weight for the film by following a strict diet that consisted of coffee, water, tuna and an apple each day. He coupled this with vigorous exercise to make for a pretty unsettling transformation.

Matt Damon - "Courage Under Fire"

Colin Farrell - "Triage"

Orson Welles - "Citizen Kane"

For his iconic role, Welles initially gained weight to play the older Citizen Kane. But to 50 drop pounds to play his younger character, he stuck to a diet of only orange juice, boiled eggs and salads for an entire month.

Daniel Day Lewis - "In The Name of the Father"

Daniel Day Lewis' weight loss method of eating minimal food wasn't the most unusual way to drop weight for his role in "In The Name of the Father." But the fact that he ate prison rations in a jail cell - he also slept in the same cell for three nights - provided an unexpected twist of commitment to the role.