Since rising to fame in the mid-1990s, Jennifer Aniston has been adored for her acting prowess and iconic sense of style. Recently, there has been speculation about whether the 55-year-old actress has undergone more cosmetic procedures, as some fans have noticed she looks somewhat different nowadays.

In honor of Jennifer Aniston's birthday, take a closer look at the Friends star's many hairstyles on the beloved sitcom.

Some famous people love experimenting with their hairstyles and others stay true to their classic appearances. Very often, we don’t even know the true hair color of some popular celebrities and have no idea what they would look like with a different hairstyle.

Jennifer Aniston at the oscars 2017

Jennifer Aniston's natural hair color is dark brown even though she's now known for having dirty blond hair.