Sideshow: Zac Efron's stays in a drug rehab

He's squeaky-clean and Jujube-soft on the outside, but in one of those Celeb Revelations That Rock the World, Zac Efron has been exposed as being all hard - hard drinkin' and druggin' - on the inside.

People mag this week reported that Zac, 25, did a stint in rehab in April.

That's not all! TMZ reported Thursday that Zac first checked into rehab in March, then returned after a relapse.

Zac's substance of choice? Coke, says TMZ.

Zac was a mere teen - 17 - when he rocketed to fame on Disney's High School Musical. Last year, he told People he wouldn't let fame ruin him. "I care too much about those around me and everything I've worked for to just go out and blow it," he said. He does party, he said, adding, "Some people can handle it, and some people can't."

Being a Gosselin in this job market can't be easy.

But Jon Gosselin gets by. He gets by, even if he has to wait tables, which he does at the Black Dog in Beckersville, in Berks County. "I've hit rock bottom like 20 times. I just bounce back," Jon tells Entertainment Tonight. But isn't that a demeaning occupation for a bona fide celebrity?

"At first . . . I was like, 'How are people going to react?' " he says. "But then I'm thinking, 'Well, it's fun, and I get to talk to people.' And they technically already know me, so they're like, 'Are you the guy?' I'm like, 'Yeah, I'm the guy.' "

The Kardashian Kabal has chased ratings with stunts such as "getting butt X-rays, giving birth on the show, and drinking each other's breast milk," says the New York Daily News. But it seems they won't offer Kanye West and Kim Kardashian's baby, North, as a blood sacrifice to Harlot Fame.

"You won't be seeing North even once on the new season," Unnamed Kim Pal tells the News.

Japanese dancer Kenichi Ebina, 38, who has created his very own dance style, has won the eighth season of America's Got Talent. . . .    Media outlets are posting a series of candid shots of Liam Hemsworth, who murdered Miley Cyrus' heart (and her common sense), kissing his new dame, Eiza González. . . . Megan Fox, 27, who began dating her hub, Brian Austin Green, 40, when she was a wee 18-year-old bairn, is expecting their second baby, says In Touch Weekly.

Kate Winslet won't be taking her third hub's name, says the New York Daily News. No wonder: She's married to Ned Rocknroll. (Real name! He legally changed it from Ned Abel Smith.) Kate, 37, who has two kids from previous marriages, is expecting her first with Ned.