By Daily Mail Reporter
Vulgar: American actress Amanda Seyfried revealed an unusual tattoo at the premiere of new film Dear John on Tuesday night
Glamorous actress Amanda Seyfried may look like butter wouldn't melt. But her choice of tattoo tells a different story.
The American actress who shot to fame in the film version of musical Mamma Mia has revealed a surprising choice of inking.
Seen on her left foot at Tuesday's premiere of new film Dear John, Amanda revealed a tattoo of the word 'm**ge' on her left foot.
Funny: The Mamma Mia! star has the word m**ge tattooed on her foot
The actress revealed her Mamma Mia! co-star Colin Firth was the inspiration for the unusual tattoo.
She told Glamour magazine: '...Colin Firth used to say that word on set and Rachel (McDowell) had to explain to me what it meant.
'So it's on my foot. It's to make me laugh, and every time I look at it I do.'
Amanda and best friend Rachel McDowell, who was in Mamma Mia! both have the matching tattoos.
'I've never really been a fan of tattoos but I wanted to see what it felt like. Rachel has a lot of them.'
Seyfried added: 'I have a dirty sense of humour. I can be blunt and vulgar.'
Despite the tacky tattoo, Amanda, 24, still looked stunning in a glittering LBD as she cosied up to heartthrob and Dear John co-star Channing Tatum at the Kensington Odeon in West London.
The pair star in the movie version of the novel by acclaimed best-selling author Nicholas Sparks.
The low-budget film surprisingly knocked Avatar off top spot in the U.S. box office when it was released in February.
Inspiration: Amanda seen here with actor Colin Firth in a scene from film Mamma Mia!
It tells the story of John (Tatum) and college student Savannah (Seyfried) who meet by chance on the beach during a summer holiday.
But their romance is threatened as the holiday ends as Savannah has to go back to college and John must return to life in the army and all that his duty entails.
The pair can only communicate through letter writing and Tatum admitted that Dear John was the real life story of many service men and women around the world today.
Dear John will be released in the UK on April 14.
Red carpet moment: Amanda and handsome co-star Channing Tatum, who play star-crossed lovers in new film Dear John