The New Moon star revealed that she really had to watch her figure on the set of the film because she was playing a younger role, reports Daily News.
The 22-year-old actress didn’t seem to have a hard time with her weight, however. She said, "It was really easy. We were working 12 hours a day, so it didn’t leave too much time to eat."
Twilight: New Moon was a hit for its opening weekend, scoring $40 million at the box office. Though her comment about not eating may make her reps cringe, Greene had to stay fit and work out for the film. She explained, "We had a personal trainer and then we also had fight training. It was a good four hours a day of training."
When the young star, who plays Alice Cullen, is not on set, her favourite exercise is Pilates. "I do it early in the morning. It wakes you up, and it’s kind of refreshing," she said.
Greene will return to her role as a vampire next year in the third instalment of the film franchise, Twilight: Eclipse.