Playing Catwoman was a pressure: Anne Hathaway

London :Anne Hathaway says she was under a lot of pressure to play Catwoman in upcoming film 'The Dark Knight Rises'.

The 29-year-old actress had to lose weight to fit into the body-hugging suit and she said she felt sick while shooting for the Christopher Nolan film, reported Showbizspy. "I didn't realize I was the first and I feel a little nauseous. That is a lot of pressure," she said.

Hathaway said that she had little idea of the physical demands of her Catwoman performance, which will highlight her own kick-boxing and mixed martial arts skills. "I had always thought I was pretty healthy and I always thought I had worked hard in the gym. It turns out that what I thought was hard, in Catwoman's world is actually light to moderate. "So I have had to ratchet everything up. But I have the most incredible stuntwoman in the world and she has got me and the character to another level. I do all sorts of kicks. I do a roundhouse kick, and I think it is all mixed martial arts. And I have been doing it in heels," she added.