‘Spy Kids’ Star Alexa Vega — I’m a 23-year-old Divorcee Now!

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After less than 650 days of marriage — “Spy Kids” star Alexa Vega took a cue from Katie Holmes” playbook and officially pulled the plug on her marriage to a much older man, our sources has learned.

The 23-year-old actress — who played Carmen Cortez in the “SK” franchise — filed docs in L.A. Superior Court recently … citing irreconcilable differences with her 36-year-old husband Sean Covel.

In the docs, Vega lists the date of separation as March 5th, 2012 … meaning the couple was separated for several months before the actress decided to legally axe the union.

Vega and Covel were married October 10, 2010 in South Dakota … the actress was just 21 at the time — but you can check her out (below) at age 6, starring opposite Rick Moranis in “Little Giants.”

They grow up so fast.