Transcript for Aniston Thinks 'Rachel' Hair-Craze Was 'Hysterical'
Reporter: Her hair started one of the biggest style trends in america. They're pulling my hair. Reporter: In the '90s her haircut, the rachel, named after her character on "friends" became one of the most imitated hairstyles of all time. It gave women the opportunity to feel effervescent and bubbly and excited and still be found attractive. Reporter: Now the 44-year-old actress is opening up and revealing the truth behind the cut that changed everything including her. In her new "living proof" webisoda. Her stylist created the look and said because it was long and frizzy. Cut the bottom, a couple inches and layered it from existing bangs to bottom. You know what happened after that? Reporter: She confesses she finds the obsession with her hair surprising because she had an unmanageable mane growing up. It's one of those things that is hysterical. Me of all people who grew up with the worst hair. Reporter: She acknowledges how important hair is to a woman's self-esteem. It matters to women because we're women and, you know, i don't know how to explain what that means. It just means something to us. Reporter: She admitted to "allure" magazine I think it was the ugliest cut I've ever seen. The celebrity stylist and actress didn't know they were about to create a phenomenon. It's amazing what a haircut can do. They came to you and all of a sudden everybody starting coming in with the slicky, slicky hairdo and I'm like what's happening. Reporter: For "good morning america," diana perez, abc news, new york.
This transcript has been automatically generated and may not be 100% accurate.