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The actress went from unknown to mane attraction on Friends with her face-framing layers – known as "The Rachel" – and inspired millions of copy-cat dos.
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IN A TWIST
What caused a bigger sensation at the Emmys in 1999 – Aniston's faux dreadlocks or then-boyfriend Brad Pitt on her arm?
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SNIP 'N' TELL
To avoid being "associated with a haircut," Aniston chopped off inches from her famous locks – debuting a short bob in the fall of 2000.
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RIDING THE WAVES
Aniston showed off her natural hair texture – wavy! – when she won the Emmy for best lead actress in September 2002.
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Aniston promoted her hit Along Came Polly in early 2004 with a bang – the star debuted new heavy fringe along with long, loose curls.
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Forget stiff updos! Aniston walked the red carpet of the 2004 Emmys with beachy waves and an embroidered Chanel gown that would both set off a new wave of copy-cats.
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STRAIGHT AND NARROW
The star wore off of-the-moment long, pin-straight layers at the recent
GLAAD Awards. "Jen has a really good head of hair," her longtime hairstylist tells PEOPLE. "I don't have to do much."