LeAnn Rimes and Eddie Cibrian
and Eddie Cibrian
acted like one big happy family with the actor's boys in tow on Sunday, as the clan celebrated Easter at Venice, Calif., restaurant Gjelina.
Clad in a cream sundress and heels, Rimes "was very doting on Cibrian's two sons," an onlooker tells PEOPLE, adding that that she and her hubby
"were adorable with one another."
Cibrian – dressed in a blue and white gingham button-down shirt – and his family dined at the trendy eatery for nearly two hours, heading out the back door just before 1 p.m. – Jennifer Garcia