Amber Heard may end up stripping naked and covering herself in blue body paint for her next movie role of Mystique in X-Men: First Class.

Amber Heard
Since this is a prequel Heard would be playing a younger version of the shape-shifting character made famous by Rebecca Romijn in the other X-Men films. Physically at least, she seems a suitable replacement. Romijn’s take on the character required almost no dialogue, and the character spends a lot of time as other people (which means being played by other actors), so I’m not sure the part really requires anything beyond the ability to look good naked. Heard has that nailed. Source
Rebecca Romijn
But she won’t… The role will be played instead by Jennifer Lawrence
Jennifer Lawrence with the Marcello Mastroianni Prize for best emerging actor or actress, for her role in Burning Plain