The 23-year-old actress essays the role of one of the 'Bling Ring' thieves in the film, reported Daily Star.
The thieves depicted in the film stole more than 1.9 million pounds worth of goods from the homes of celebrities such as Paris Hilton, Lindsay Lohan and Orlando Bloom among others.
Watson said she drew lifestyle inspiration from episodes of the reality show and MTV's 'The Hills'.
"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," Watson said.