1: Jennifer Aniston's "Rachel" haircut defined 90s style.

2: Beyoncé's blonde locks set trends with grace and power.

3: Audrey Hepburn's pixie cut remains a timeless classic.

4: Lady Gaga stuns with ever-changing boundary-pushing hairstyles.

5: Rihanna's red carpet hairstyles always steal the show.

6: Princess Diana's short, feathered 'do was iconic worldwide.

7: Marilyn Monroe's blonde bombshell waves are unforgettable.

8: David Bowie's ever-evolving hair matched his music's innovation.

9: Elvis Presley's slicked-back pompadour is rock 'n' roll royalty.