11 / 15
Chris Hemsworth went on an extreme diet for his role in In the 'Heart of the Sea'. He had to lose 15 kilos in a concise space of time.
12 / 15
Liam Neeson lost ten kilos for his role in 'Silence'.
13 / 15
Jennifer Hudson and Christian Bale win joint first place when it comes to which actors lost the most weight for a role. Jennifer lost an astounding 28 kilos for her performance in the film 'Winnie Mandela!'
14 / 15
Jared Leto starred alongside Matthew McConaughey in 'Dallas Buyers Club'. Both actors lost a lot of weight— Leto lost a whopping eighteen kilograms! They both won Oscars for their performances.
15 / 15
'LOST' star Matthew Fox lost an unbelievable twenty-two kilograms to play serial killer "Picasso" in the film Alex Cross.