Paris, Nicole filming third 'Simple Life'

Filming on a new series of The Simple Life got underway yesterday (Wednesday) as Paris Hilton and Nicole Richie hit the road once more.

Last series the pair drove themselves cross-country in a camper van, working in a variety of trailer parks, burger bars and farms. This time round they'll be on a chauffeured greyhound bus, travelling along the East Coast and working as interns in more challenging positions such as Wall Street and a stint in a classroom.

"It's two girlfriends having fun and being silly which I think a lot of girls can relate to," Richie told Reuters before boarding the bus. "A lot of people have misconceptions that we wouldn't know how to do things. This is to show everybody that we can do it."

Whether that means Paris and Nicole - who packed nine and six suitcases respectively - will be taking things more seriously this season remains to be seen.