Ashley Tisdale Shows Off Figure in Deep-Cut, Sparkly Black Cutout Dress: Picture

Ashley Tisdale arrives at the Los Angeles premiere "Scary Movie 5" in a risque black-and-sheer dress on April 11, 2013, in Hollywood, California. Jon Kopaloff/FilmMagic

Modesty much? Ashley Tisdale completely shed her former Disney star image at the red carpet premiere of Scary Movie 5 in Hollywood on Thursday, April 11, with a deep-cut, sparkly black cutout Maria Lucia Hohan dress.

The former High School Musical star's vampy look included large cutouts that showcased her toned arms, as well as a slit that extended from just under her chest all the way down the length of both legs.

Earlier this week, Nicole Richie took a similar plunge with a revealing black-and-sheer Emilio Pucci jumpsuit that showcased a daring see-through panel that ran from her ankle to waist. 

Tisdale, 27, also recently posed nearly nude in a sexy shoot for the May issue of Maxim. In one of the shots, the actress flashes some major sideboob and goes pantsless as she tromps across the sand for the beachside shoot.

Luckily, however, the actress told Us Weekly at Thursday's premiere that she's figured out a fail-proof trick to stay in tip-top shape (perfect for her recent slew of daring outfits).

"I like to have [Victoria's Secret models'] pictures and it inspires me," Tisdale said. "I don't want to look like them but it's good whenever I'm going to eat a pizza, I look at their pictures and I'm like, 'just stay on track.'"

The actress looked to be in a good mood at Thursday's premiere. An eyewitness tells Us that Tisdale looked glowing as she and rocker boyfriend Christopher French made their way to the comedic flick's after party, where she mixed and mingled with costars Kate Walsh, Erica Ash and Ava Kolker.

"Ashley made out with her boyfriend Chris on the dance floor," the onlooker tells Us. "She seems infatuated with him. She was dancing a ton and screamed across the room for her friends to come join her. … [she] seemed to be in a really good, upbeat mood. Christopher just let her shine."

Sign up now for the Us Weekly newsletter to get breaking celebrity news, hot pics and more delivered straight to your inbox!

Want stories like these delivered straight to your phone? Download the Us Weekly iPhone app now!