Kidman shows off baby photo

Nicole Kidman has broken her own golden rule - and showed off a baby picture of her daughter Sunday Rose.

Just last month, the actress told Parade magazine she'd never show her baby daughter off to the world - because she's keen to keep her precious child as protected as possible.

But talk show queen Oprah Winfrey made her reconsider when she taped a recent interview with Kidman and her Australia co-star Hugh Jackman.

The actress revealed she had a photo of her four-month-old baby in her purse backstage - and Winfrey insisted on seeing the black and white snap of mum and daughter sleeping.

Kidman explained her husband Keith Urban took the shot on his iPhone: "I make him print photos."