Added McKenzie: "It's quite a rare and bizarre but cool thing to be involved with a production at this level with a very old school friend. We dabbled in inter-school productions together and always got along and fed off each other's high energy. Mine rapidly declined with age, but hers somehow continually climbed."
The warm fuzzies stop when it comes to talking about their characters:
"Josh plays my [Savannah's] wealthy half-brother," Fenton said.
"I can't give away too much, but after their first meeting she thinks he's a twisted head case and doesn't want much to do with him, unlike the other two brothers who are very much in the same boat as Savannah. This could change though."
Fenton, who plays a stripper, is quite sure the public will embrace Savannah's underdog illegitimate status. McKenzie is not so certain how his character will go down.
"The public are unpredictable. I wouldn't know what to expect. But it's fair to say John jnr isn't a particularly likeable character. I really think the show will test public opinion. I like this."
Win with Spy.co.nz
Spy has 10 double passes to the launch party of Filthy Rich on Wednesday, February 10.
Meet the stars and get a first-hand taste of the Filthy Rich lifestyle. To enter, head to our Facebook page and tag the friend you want to take.
Entries drawn on Thursday February 4.