Watson wore short cut-off denim shorts and a midriff baring crop top. She also revealed a (fake) tattoo on her lower back.
The film, directed by Sofia Coppola, is based on the true story of a group of teenagers who stole from celebrities, including Paris Hilton, Lindsay Lohan and Orlando Bloom, in 2008 and 2009.
Emma plays a character called Nicki whose mum is an ex-Playboy model (Leslie Mann) keen for her daughter to find fame.
Find out what Emma tweeted from the set…
Filming Bling Ring is going great. As Israel would say ‘we are slaying this!’. Thanks for the good luck messages.
— Emma Watson (@EmWatson) April 3, 2012