Hilary Duff and punk boyfriend Joel Madden are shooting a spoof reality TV series, but insist they'll never become America's next Newlyweds for real.

The odd couple, who are both huge fans of reality shows, recently treated themselves to a video camera and use it to make quirky shows for their pals, but they won't be following Jessica Simpson and Nick Lachey or The Osbournes on TV.

Duff says, "We always kid around about it (video camera) and say things from the show (Newlyweds), but it's (reality show) just not our style.

"Marriage is so sacred, and it just seems weird to have the whole world watching you."