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JEnnifer Aniston

Jennifer Aniston during 18th Annual GLAAD Media Awards - Arrivals at Kodak Theatre in Hollywood, California, United States. (Photo by Jon Kopaloff/FilmMagic for Variety Magazine)

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.