R&B singer Alicia Keys has been inspired to master martial arts after watching Anne Hathaway kick butt in The Dark Knight Rises.

The Empire State of Mind hitmaker was left in awe at Hathaway's transformation into Catwoman for the summer (12) blockbuster and she is keen to follow in her self-defence footsteps.

She tells Details magazine, "I'm very close to beginning to study martial arts. I saw The Dark Knight (Rises) and I said, 'I must be able to kick a** like that, period', and I'm going to do it. I'm so excited!"