"Jesse's Girl" Rick Springfield bares ALL as he tries to outdo David Duchovny on Californication!

"It's not full-frontal, but it's pretty much full on," the musician-actor, 60, revealed. "As long as it's for the part, I'm cool with it. And it's funny. It's not done to be particularly sexy."

Rick is signed for 4 eps, playing a washed up movie star named "Rick Springfield" who wants to rebuild his career.

First step: bare your butt in a party scene with stars Duchovny and multiple partner fancier Evan Handler at a wild out of control Hollywood party.

"I've got a sore back from carrying a naked girl around," Rick revealed, adding the "great writing" drew him to the sexy satire and that he may be back next season as well if his guest arc clicks with auds.

Longtime fans may recall Rick's long lasting stint on General Hospital during the 1980s when his numero uno "Jesse's Girl" was topping the charts.