Jason Schwartzman embarrassed himself by exposing his women's underwear when filming 'Scott Pilgrim vs. The World'.

The US actor took his role as Gideon Gordon Graves - the jealous ex-boyfriend of female character Ramona Flowers in the film - so seriously, he decided it would be appropriate to incorporate bright red girls' underwear into his costume, although this backfired when his trousers split.

Speaking at the film's European premiere at the Empire Cinema in London's Leicester Square, the film's director Edgar Wright, told BANG Showbiz: "Jason Schwartzman decided he would wear women's underwear under his costume.

"He plays a possessive boyfriend so thought he might wear Ramona's underwear, then one day he split his trousers and revealed his underwear for the crew. He was wearing red silk panties under his costume. That's absolutely true, the rest of the cast and the crew were in stitches, because most of them didn't know."

Jason has previously explained how he felt the panties were an integral part of Gideon's character development and character's story.

He explained: "Every day while I was working and while you watch Gideon Graves, he's wearing Ramona Flowers' panties.

"I had this idea that my character flew from New York to Toronto with like just a carry-on bag and he didn't wear any underwear because he rarely wears underwear.

"He and Ramona spent the night together and the next morning because she's his again and he wants ownership - he thinks in that way - he would have worn her underwear; to own her; to have her underwear on him. And I also wore her perfume every day."

'Scott Pilgrim vs. The World' is in cinemas across Europe from Friday (25.08.10).