Emma Watson watched Keeping Up With The Kardashians to prepare for The Bling Ring.

The 23-year-old actress plays Nicki, a celebrity burgling teenager in Sofia Coppola's new movie and Emma watched reality TV so she could "understand the psychology" of her character. Speaking at the Cannes Film Festival, she said, "I watched a lot of Keeping Up with the Kardashians and The Hills, and I tried to understand the psychology of this kind of girl as much as possible. I didn't want her to be just a parody. The accent was hard as it was a particular kind of dialect. I also thought a lot about what her parents must have been like."

The movie is based on the real-life story of a group of teenagers who broke into the homes of celebrities including Lindsay Lohan, Paris Hilton and Orlando Bloom but Emma insists the film is not just another heist movie. "This really isn't a heist movie. It was about how these kids wanted to pretend for just two hours or so that they were actually Paris Hilton and living that life," she explained.