Marisa's physical transformation
Marisa has said it's a "huge responsibility" to ensure she plays Amy accurately.
She even lost weight and underwent physical training for the role.
Marisa told the 'Before The Lights' podcast: "I was anticipating [training for the role] being quite difficult in terms of maybe thinking, 'This is how I should look when I’m at my skinniest.' But actually, it’s the opposite.‘ I almost see my body as a true instrument that I’m training for a job."
She had a nutritionist to do so healthily, unlike Amy who got scarily thin and is said to have battled an eating disorder.