Julia Roberts reveals George Clooneys on-set pranks

Julia Roberts has opened up about the practical jokes that were played on the set of the Ocean's Eleven and Twelve movies, saying: "You didn't want to leave your camera lying around".

The Eat, Pray, Love actress doesn't say which of her co-stars were involved, but in an interview with US Elle, she said: "People were breaking into each other's rooms, taking them [cameras], and let's just say you didn't want your mum picking up your photos at Walgreens!

"[There were] photos of unidentifiable body parts."

Roberts, 42, appeared in Ocean's Eleven and Ocean's Twelve alongside George Clooney, Brad Pitt, Matt Damon and Don Cheadle.

The mum-of-three said: "One day, George Clooney put these giant potted trees in front of my door, so that I couldn't get out to work.

"I pride myself on being punctual."

Roberts has also been having fun with her Eat, Pray, Love co-star Javier Bardem.

The 41-year-old Spaniard, who plays her love interest in the film adaptation of Elizabeth Gilbert's memoir, said: "We make a link with humour.

"Some words are funny to her. The way I saw enlightenmente [sic] – she would make fun all day with that word."