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Frankie Muniz turns 27 on Dec. 5, 2012. The actor is best known for his starring role in the FOX television series 'Malcolm and the Middle.' The actor also recently appeared on the ABC series 'Don't Trust the B---- in Apartment 23.'
Pictured: Frankie Muniz appears in an undated photo posted on his Twitter page.
( Photo / twitter.com/frankiemuniz)