Emily Blunt is quite the prankster on set, according to her co-star in The Young Victoria Rupert Friend.
Emily, 25, who plays the young Queen in the film, enjoys nothing more than playing tricks on her fellow actors.
Rupert, who plays Victoria's husband Prince Albert, revealed; "She's very hard not to have fun with. She's a proper practical joker and she's not interested in having a dry day so she's a very subversive lady."
He added: "I wish I could say [there was a] whoopee cushion because that's about the level that it's on, it's not sophisticated humour that we had, it's more like pulling someone's chair away just as they're about to sit down."
It appears that Emily wasn't the only member of the cast who enjoyed a joke. Paul Bettany, who plays the Prime Minister, Lord Melbourne, also found ways to make the others laugh.
Rupert continued: "Paul Bettany had a habit of blowing a raspberry just before your close up, just as they would turn the camera over he'd [blow a raspberry] then he'd make you do the acting and he did that every time, and he was a s**t for doing that."