At first we thought Joel Madden and a dressed-down Nicole Richie were arriving at Los Angeles International Airport last night, but after zooming in a bit we realized that it was actually the family's nanny!

Joel pushed son Sparrow in a luggage cart while the nanny held on tight to little miss Harlow, and the group were returning from Australia, where Joel hosts The Voice. Nicole was visiting Joel in Australia, so we're not sure where she was yesterday, but she recently revealed that she's grown quite accustomed to traveling there with the kids to be with her hubby.

"I feel very close to Australia," Nic told The Sydney Morning Herald earlier this month. "I really do feel like it's my second home. We've spent so much time there, Joel is an honorary Australian. So I'm going to ride on his coattails there and I just assume that I'm an honorary Australian also."