Kristen Wiig says she was surprised by how good The Secret Life Of Walter Mitty was when she watched it back.

The 40-year-old star admits she didn't expect the movie, which she stars in with Ben Stiller, to be as ''beautiful'' as it was.

Speaking to Collider, Wigg said: ''You never know, any movie you do you see the finished thing and you're like, 'Wait, what?' Yeah I was completely blown away, I mean I think it's really beautiful.

"There are so many shots of Ben skateboarding and stuff where I wasn't there so I didn't get to see any of that footage and I thought the music was unbelievable.

''I was really pleasantly surprised and happy. I knew it was going to be good, but all of the visual effects and the music and everything, it really just created this really beautiful thing.''

Read our review of The Secret Life of Walter Mitty here.