Alexa Vega Is All Grown Up (And Out) [PIC]

But she's still starring in Robert Rodriguez movies. Alex became famous for her role as a pint-sized spy in Rodriguez' Spy Kids franchise, but for her fifth collaboration with the Austin, TX based filmmaker, she's trying on a whole new-- and wholly adult-- role.

23-year-old Alexa tweeted a pic of herself on the set of Machete Kills last week, showing off her ripe, round melons in an elaborately spangled bra. Alexa co-stars in the film as Killjoy, a sexy assassin in the employ of the seductive Madame Desdemona (Sofia Vergara- see her in costume here). This Spy Kid has become a spy woman.

See hot content from Alexa Vega's Machete Kills co-stars Amber Heard, Sofia Vergara, Jessica Alba and more right here at MrSkin.com!

Thanks to Dave for the tip