LOS ANGELES (AP) -- Nicole Kidman's publicist says the 40-year-old actress is pregnant.

Publicist Catherine Olim says Kidman and her husband country singer Keith Urban are thrilled about having their baby.

Kidman is currently at home in Sydney, Australia, where she has been working on Baz Luhrmann's epic romance, "Australia." She and Urban also have a home near Nashville.

Kidman was due to start filming for director Stephen Daldry's post-World War II drama "The Reader" later this month. But her Australian publicist Wendy Day says Kidman has had to withdraw from the film because of the pregnancy.

Speculation has been increasing in recent weeks over Kidman's maternal condition. Dozens of paparazzi have been tracking her, focusing in on her what was believed to be a "baby bump."

(Copyright 2008 by The Associated Press. All Rights Reserved.)