Nicole Kidman has dismissed speculation that the actress is expecting her second child.

The Australia star stepped out in New York this week with what appeared to be a burgeoning baby bump, prompting another round of pregnancy gossip.

But her rep said: "To my knowledge, she's not pregnant."

Nicole already has a one-year-old daughter, Sunday Rose, with husband Keith Urban, and two adopted children, Isabella and Connor, from her marriage to Tom Cruise.

More phantom bumps