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Jennifer Aniston

Jennifer Aniston during The 60th Annual Golden Globe Awards - Press Room at The Beverly Hilton Hotel in Beverly Hills, California, United States. (Photo by Jeffrey Mayer/WireImage)

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.