Julia & Danny: Baby Joy!

Sources are buzzing that Julia Roberts and Danny Moder are expecting their fourth child.

Julia Roberts and husband Danny Moder couldn’t keep their hands off each other during a recent vacation in Kauai, Hawaii. “She was laughing and smiling the whole time and had a definite glow about her,” an onlooker tells OK!, adding that Danny, 50, was being so sweet and protective. “It seemed like they were celebrating something — and maybe hiding a happy secret.”