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Jennifer Aniston

MADRID, SPAIN - FEBRUARY 22: Jennifer Aniston attends the premiere party of 'Sigueme el Rollo' (Just Go With It) at the Room Mate Oscar Hotel on February 22, 2011 in Madrid, Spain. (Photo by Fotonoticias/Getty Images) *** Local Caption *** Jennifer Aniston

Jennifer Aniston's Hair Transformation

Jennifer Aniston's classy style is sometimes described as predictable, but she's much more experimental when it comes to her tresses than she is with her wardrobe. In honor of the actress' 44th birthday on February 11th, take a look back at the many hairdos — and a few hair don'ts! — that she's sported over the years.