Kidman celebrates hubby's birthday with Watts

Nicole Kidman celebrated her troubled husband Keith Urban's 39th birthday with her favourite girls - best friend Naomi Watts and sister Antonia Hawley.

Pregnant TV presenter Hawley jetted to Hollywood from her native Sydney, Australia to help her sister cope with what should have been a big celebration on Thursday - the first birthday the couple would have celebrated as husband and wife.

Urban checked himself into a rehab centre earlier this month after revealing he was battling alcoholism.

The Kidman sisters spent the day at pal Watts' Hollywood home, for what is being dubbed a "tea and tissues session" by insiders.

Hawley's young son Hamish, who accompanied his mother on the trip, helped lighten proceedings - he was seen in Kidman's arms as she left Watts' home for a waiting car late on Thursday.