Kristen Stewart reveals she is "frustrated" because she can't bowl

Actress Kristen Stewart claims she is "frustrated" by her poor bowling skills.

The Twilight star said she is particularly annoyed with her inability to master the pastime because she is usually "good at everything".

She said: "I cannot bowl, and it really is very frustrating. I'm awful, and it sucks because I'm really kind of good at everything."

The 23-year-old actress's shortcomings amused her fellow performers in gritty new drama Camp X-Ray.

Ser'Darius Blain said: "Kristen sucks at bowling. I will say that. I tried to help her. I tried."

Joseph Julian Soria added: "She's a crappy bowler. She needs bumpers."

But it seems the on/off girlfriend of Brit actor Robert Pattinson did impress with her golf skills.

Co-star Lane Garrison said: "We built a driving range in the prison and I brought like 400 golf balls. We would go out there and hit about 100 golf balls. She has an amazing swing."

Stewart, who took on the role of an army guard at Guantanamo Bay for the film, admits she wasn't sure her performance would be believable.

She told MTV News: "I was so nervous when I first started working and preparing because I didn't think that people would believe me or think that I looked tough in a uniform, that I could do that job, that I could wrangle detainees that are massive and scary."