By Breaking Celebrity News Staff

Mariah Carey and husband Nick Cannon had their hands full with DemBabies down under on Saturday.

As our new photos show, the happy couple were a perfect twin tag team as they toted son Moroccan and daughter Monroe, 1 1/2,  while on vacation in Queensland, Australia on Dec. 29.

The singer and American Idol judge and her America's Got Talent host hubby showed off their babies as they got on a private yacht. Wearing a bright orange dress, sunglasses, and a smile for photographers, Carey tenderly carried their little boy while Cannon held Moroccan's twin sister. Cannon, casually dressed in a tee shirt, carried all their baby essentials in a back pack and also seemed to be toting Carey's purse!

At one point during the adorable scene, little Moroccan, who sucked on a pacifier, stood on the dock and held his daddy's hand. Later, Cannon hoisted Monroe up in