Alexa Vega engaged to Carlos Pena Jr.

Alexa Vega engaged to Carlos Pena Jr., Alexa Vega is engaged again! The former child star, 25, who skyrocketed to fame with her role in the "Spy Kids" movies and will soon appear in "Machete Kills," is set to tie the knot with "Big Time Rush" star Carlos Pena Jr., 24.

No stranger to fame himself, Carlos has had several guest-starring roles on hit shows like "Judging

Amy," "Summerland," and "Ned's Declassified School Survival Guide," but his biggest role yet? Future husband! Alexa's leading man made the surprise announcement on Twitter Wednesday, posting a photo of his fiancé wearing her huge engagement ring, which appears to feature a yellow canary diamond. He captioned the pic, "My angel!!! @vegaalexa awesome road trip so far!! Now we just need to get back..." Aww, not only is he sweet, he's got great taste in jewelry, too.

Alexa also posted a snapshot of her man, writing, "Hello Fiancé." The happy couple began dating at the end of last year after Alexa's divorce from movie producer Sean Covel was finalized (she and Covel married in 2010).