Everyone knows that Hollywood is a hotbed of sexiness, with actors constantly competing to be the prettiest, the strongest and the most alluring. The actors on this list all have the good looks needed to make it in Tinseltown, but they haven’t stopped there. For the sake of their craft (and our eyes) they’ve put their pretty bodies through grueling regimes, bulking up to play warriors, beefcakes and superheroes. Here are our favourite transformations.