Gemma Arterton admits that she was 'unhappy' when she saw her new movie Prince of Persia: The Sands of Time.
The actress takes on the role of Princess Tamina alongside Jake Gyllenhaal in the Mike Newell directed movie but felt that she was out of place in the action blockbuster.
In an interview with Stylist magazine the actress said: "I was really unhappy. I remember seeing the film and thinking 'Wow, this is amazing and epic and beautiful', and then seeing myself in it and thinking, what the hell am I doing in it?
"I just found it really weird, and I was a little depressed about it. Every insecurity you have is amplified on a huge screen.
"I can't watch things more than a couple of times, because I find it too strange. I wasn't always this way. In 'St Trinian's' I didn't care. But that's changed."
And the actress revealed that she was shocked by the size of the production when she walked on set on the first day of filming.
"My first day on set was a shock - the sets were huge and the producers spent thousands of dollars on my costumes.
"But I think I would have freaked out if I took the job too seriously, so I would muck about and have fun on set.
"I never saw 'Prince of Persia' as a big fat deal that would make me into a massive movie star, which is what certain people have said.
"It's funny, it is a pivotal moment, but without putting it down, I think the most significant moments in my career were smaller films that challenged me, like 'The Disappearance of Alice Creed' and 'Tess Of The D'Urbervilles.'
Prince of Persia is released 21st May.
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