Oscar-winning actress Julia Roberts is expecting a third child with her husband, cinematographer Danny Moder.
Roberts is one of Hollywood's highest-paid actresses
The couple, who married in 2002, had non-identical twins two years ago, and the new baby is due in the summer, said Roberts' publicist, Marcy Engelman.
Roberts, 39, has been one of the most popular actresses in Hollywood since her 1988 breakthrough in Mystic Pizza.
She won an Oscar for Erin Brokovich in 2001, and is currently the voice of the wise spider in Charlotte's Web.
The actress has picked up two further Oscar nominations for Steel Magnolias and Pretty Woman, and has also starred in a string of other hit movies such as Notting Hill and The Pelican Brief.
Massively popular with cinema-goers, Roberts has won the People's Choice favourite actress award nine times.
Roberts married Moder at her private New Mexico estate in 2002
And her box office pulling-power has seen her become the highest-paid female film star in Hollywood.
Roberts can command around $20m (£11.6m) per film, and topped the Hollywood Reporter's annual Women In Entertainment Power List from its inception in 2002 until 2005.
She dropped off the list this year because she had taken time out after giving birth to her twins, Phinnaeus and Hazel, and consequently did not star in any live-action films released in 2006.
However, Roberts made her Broadway debut in April, starring in a sold-out run of the play Three Days of Rain.
News of her pregnancy first appeared in the gossip pages of the New York Post and was confirmed by Roberts' publicist to People magazine.