The 20-year-old had to endure an eight-hour process - which involved being be shaved, rubbed down with alcohol, coated with five layers of paint and topped with silicone scales - to transform her in to blue-skinned mutant Mystique.
She told The Telegraph, 'I got tired just thinking about it. It was a long process. I have scars.'
But despite the lasting marks that it left on her skin, she insisted that the film was 'a very cool thing to be a part of'.
'It was mostly just fun. I don't remember us working, I just remember us cracking up on set,' she said.