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

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