Ashley Tisdale takes it all off for Allure

(CBS) -  "High School Musical" and "Hellcats" actress Ashley Tisdale is baring it all for Allure magazine.

She is one of several showbiz femmes, including singer Keri Hilson and actress Bridget Moyhahan, who posed nude as part of Allure's annual naked truth feature.

In the pictorial, shot by famed fashion photographer Patrick Demarchelier, Tisdale is sitting on her heels with her back to the camera, revealing a "believe" tattoo.

"I'm 25, almost 26, but people think of me as much younger because I look young," she says. "Being in this shoot was me saying, 'I'm not just the young girl everybody thinks I am. I'm actually a woman.'"

And Tisdale's parents certainly had no qualms with her posing in her birthday suit: She brought her mom, Lisa, to the photo shoot.

"I've always wanted to be sure my parents approve of what I do," she explains. "Even with my tattoos, my mom went with me."

Click here to see more of the Allure may shoot or pick up the magazine when it hits newsstands April 19.