Y2K hair styles, a popular trend in the early 2000s, are characterized by sleek, straight locks, often with a middle part and face-framing layers. Examples include the iconic "Rachel Green" haircut from the TV show "Friends" or the blunt bob sported by Britney Spears.
Y2K hair styles gained popularity due to their versatility and ease of styling, and they continue to be relevant today for their fresh and edgy aesthetic. Additionally, the trend marked a shift away from the big, voluminous hair styles of the 1980s and 1990s.