Hollywood actress Nicole Kidman has failed to quell rumours she is expecting her first child with husband Keith Urban - after she was spotted out and about wearing a maternity-style dress. The 40-year-old star and her musician partner were reported to have told their families over Christmas (07) they were having a baby, but a spokesman for Kidman vehemently denied the rumours. Now the actress has fuelled fresh speculation by stepping out in Sydney, Australia on Thursday (03Jan08) wearing a baggy floral dress with elasticated waistband. The smock-dress appeared to balloon out in the middle, sparking suggestions she has something to hide. The Golden Compass star already has two adopted children, Isabella, 14, and Conor, 12, with ex-husband Tom Cruise.