Zac Efron is encouraging his longtime girlfriend to get naked on film. The 21-year-old actor has urged his High School Musical co-star turned steady to pose for a steamy magazine shoot or strip down for an on-screen sex scene so that she can shed her image as a Disney Tween Queen and establish herself as a mature actress.

After all, nothing says “Oscar-worthy Actress Here” like baring your bottom in the next issue of Playboy.

In 2007, the bubbly brunette affectionately known as “Baby V” rocked the Web when private images of the now 20-year-old actress bucket naked — vag bush and all — leaked online. This time around, Zac is hoping for something a bit more “tasteful.”

“Zac believes it is a good way for her to get beyond the teeny-bopper stigma,” an insider close to the young couple reveals in the June 1 issue of The National Enquirer.

The handsome Zac is enjoying his first post-Musical success with the box office hit 17 Again — and he wants to the same for his girl, according to pals.

“He is making the leap to A-list actor and he wants Vanessa to go along with him….He told a pal, if she has to bare more of her body, then she shouldn’t be afraid of doing that.”

Earlier this month, Vanessa admitted that she was open to the idea of baring all for the camera, but only if nudity is essential to the role.

“I will show nudity in a film when the time is right. Right now, I wouldn’t feel comfortable doing it.”