Anne Hathaway secretly broke her right arm this summer (12) after falling off her bicycle.

The Dark Knight Rises star took a tumble while cruising around on her bike and the 30 year old admits she was so embarrassed by her clumsiness, she kept news of her medical mishap under wraps.

She tells U.S. TV host Ellen DeGeneres, "I broke my arm and kept it a secret... I broke it when I finished Les Miserables, just before Batman press came out.

"I fell off my bicycle and that's how I broke it and when my husband (Adam Shulman) went to pick up my pain meds (medication), the pharmacist was like, 'Catwoman can't ride a bike?'

"So I was like, 'Oh my God, I can't let anyone know about this.' I managed to keep it a secret. Until now".

Hathaway even had to undergo surgery, but she outfoxed reporters on her press tour by taking off her splint before interviews, revealing, "I had to have surgery, so I didn't have to have a cast, I just had a removable splint".

However, the beauty is no stranger to broken bones - the accident-prone star has previously fractured her pinky, coccyx, and left arm - twice.