"Let me tell you shooting in a bikini is not easy," the actress — who plays a cop in the movie Dhoom2 — told Hindustan Times in an interview published on Thursday.
''After three days of eating oranges, working out thrice a day and going paranoid, 'am I fat?' I did not want to look very oomphy, I wanted to look athletic,'' said Basu.
''I wanted to be a Cameron Diaz, I did not want to be a Pamela Anderson,'' she said.
Basu, who is currently dating Bollywood heartthrob John Abraham, has starred in more than 22 movies since she entered Bollywood five years ago. Her recent films include No Entry and Phir Hera Pheri.