Is Anne Hathaway's sexy, pot-stirring cat burglar Selina Kyle, a.k.a. Catwoman, Batman's (Christian Bale) friend or foe in The Dark Knight Rises? It's complicated, but we will tell you one thing that's certain: The actress is purrfectly capable of kicking butt in a skintight leather suit and steel high heels. As one might imagine, Hathaway says that the part -- which required her to do many of her own stunts and to train extensively in martial arts -- was the most physically demanding of her career. "I'd always thought I was pretty healthy and I always thought I had worked hard in the gym and it turns out that what I thought was hard, in Catwoman's world, is actually light to moderate," she told Collider of her training regimen. "I've had to ratchet everything up."