She’s dedicated to her craft, and Anne Hathaway has taken drastic means to get into her character while filming “Les Miserables.”

The “Get Smart” actress, who was spotted alongside co-star Hugh Jackman on the set on Wednesday (April 18), plays doomed prostitute Fantine in the flick and has survived on just 500 calories a day since pre-production to really look authentically frail.

An insider told press, “Anne is playing a destitute factory worker-come-lady of the night. Unfortunately, she only has 15 to 20 days to lose as much weight as possible – up to a stone-and-a-half – because she’s been filming the scenes showing her fit and healthy, almost slightly chubby.”

“It’s not ideal but, as with any high-budget movie, there are strict time constraints. Producers have assigned her a personal trainer and she is literally eating nothing more than a couple of apples a day, and some protein – mainly in the form of a shake.”