Alexa Vega: 'Machete Kills' photo is way too sexy for a 'Spy Kid'

Alexa Vega is all grown up -- like, all the way grown up. The actress, best known for her pre-pubescent turn in the "Spy Kids" film series has reunited with director Robert Rodriguez for a more grown up role.

Vega stars in "Machete Kills," the sequel to Rodriguez' 2010 action exploitation film, "Machete." This time, instead of the young daughter of espionage agents, Rodriguez cast Alexa as KillJoy, "bodyguard of a whore house."

Alexa tells THR she's kept in touch with Rodriguez since the first "Spy Kids" film. "One day he told me, 'I have a role for you, but I don't know if you're ready to do this,'" she says.

Maybe what Rodriguez should have been thinking about is whether the world is ready for Alexa Vega's clevage. The actress posted a photo to Twitter of an official film still, printed by Rolling Stone. In the photo, Alexa wears an ensemble worthy of the Victoria's Secret Fashion Show -- an embellished push-up bra, barely there bikini bottoms, and studded leather chaps -- as she holds a gun at her side.

"I've never done anything like this," Vega says. "I'd never felt comfortable enough, and I never thought this would be the project where I'd take a step forward."