Actress Alexa Vega, who starred as a kid in "Spy Kids" and is now 24 years old, tweeted a sexy picture of herself on Robert Rodriguez' "Machete Kills."

Vega plays a character named Killjoy in the new movie set for release in April 2013, which also stars Sofia Vergara, Lady Gaga, Jessica Alba, Michelle Rodriguez and Amber Heard.

In the picture Vega debuts her grown up image wearing just a black bra and black leather chaps.

"The first time I walked out in my outfit on set, everyone was like, 'Wow, you're not allowed to wear that,'" Vega told The Hollywood Reporter about Machete Kills. "This was all about owning my sexuality. I worked really hard for it in a way that I never had to work hard for something else before."

Machete Kills stars Danny Trejo as Machete Cortez, who is recruited by the U.S. government to take down an arms dealer (Mel Gibson) who looks to launch a weapon into space.