The Hangover's Bradley Cooper has said that he loved having a perm in his new film, the 1970s' gangster film American Hustle.
Speaking about his new hair-do in the film, he said: "I miss it, I loved it, I would try to not take a shower for as long as I could so I could keep it!"
The Oscar nominated star had previously worked with David O.Russell on Silver Linings Playbook and he told the director about his idea for the perm: "I was watching some footage from that period and a couple of guys had curly hair so I said to David what if he curls his hair?
"We made a lot of choices; you always want to try to figure out personal ways to make it real to you.
"We wanted me to be unrecognisable, he chews his tongue and when you chew your tongue it changes everything. Then there was the walk and why does he curl his hair?
"It takes three hours every day and I actually did it and that puts you in the mindset. All those crustacean- like elements help fuel the internal life."
American Hustle co-stars Christian Bale as a con-man who ends up working an FBI agent (Cooper) and also stars Amy Adams, Jennifer Lawrence, Jeremy Renner and Louis CK.
David O.Russell and Bradley Cooper: