The Game of Thrones actress couldn’t believe how kind her Oscar-winning co-star was while they were shooting X-Men: Apocalypse. When Sophie felt under the weather one day, Jennifer did everything she could to make her feel better.

“Despite being one of the most famous actresses in the world, she’s so down-to-earth,” Sophie said in an interview with Britain’s Marie Claire magazine. “One day I got sick and she was looking after me, constantly checking up on me, getting me tablets. She was like a big sister.”

As well as initially worrying about working with a big name such as Jennifer, Sophie also fretted over collaborating with Michael Fassbender for X-Men: Apocalypse. The 20-year-old actress – who plays Jean Grey in the upcoming mutant movie – soon realised her fears were unfounded when she discovered he had a great sense of humour.

“I was also nervous about meeting Michael Fassbender,” Sophie admitted. “But (on my first day on set) I looked over and he gave me the middle finger, jokingly, and I thought, ‘We’re going to get on.’”

Sophie has continued to flourish in Hollywood since landing a role in film Barely Lethal, which also starred Hailee Steinfeld and Jessica Alba.

She now looks set to hit the big time after landing the role of Jean and confessed she couldn’t stop crying when she won the part. Although she's quickly carving out a successful career in Tinseltown, she still finds herself getting star-struck around her favourite actors.

When quizzed about the funny photograph she posted while sitting in front of Ryan Gosling at the Screen Actors Guild Awards earlier this year (16), Sophie recalled she couldn’t keep her cool while being in such close proximity of the heartthrob.

“That was one of the greatest moments of my life,” she laughed. “I’m now terrified that I’m going to do a project with him, though. Maybe he’s seen the Instagram... I always do this. I’m never cool around celebrities.”