'True Blood' star on season 4: Sex is 'off the charts!'

"True Blood" is back and taking sexy to a jaw-dropping, mouth-watering new level.

Don't believe us? Then maybe you'll listen to one of the show's sizzling stars...

READ: 'True Blood's' Joe Manganiello Hotter Than Ever

"It wouldn't be 'True Blood' if we didn't up the ante a million percent and add like 50 new characters!" Carrie Preston told us of the series' upcoming fourth season at last night's L.A. Film Festival premiere of "Bernie."

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While Preston says her character, Arlene, won't be doing anything raunchy enough to ruin her relationship with Terry (Todd Lowe), she promises the sex factor of the show, which is back June 26, is "off the charts!"

"You've got a lot to look forward to if that's the kind of thing you're into," she laughed.

And for those of you who are like us and are hoping for more shirtless Joe Manganiello than ever, Preston ensures, "You'll be satisfied. They like to get the clothes off those boys as much as they can."

One guy you won't be seeing showing some skin on the show? Preston's "Lost" star hubby Michael Emerson who was also at last night's premiere.

"I'm friendly with Alan Ball..." Emerson said when we asked if he'll ever pop up on the hit HBO series. "He'll say, 'I've gotta get you on here!' And I'll say, 'Yes, I'm ready!'"

But as for taking part in the series' many scantily clad sex scenes, he said, "that would not be the role that I would be auditioning for."

VIDEO: More from last night's 'Bernie' premiere