It is generally some celebrity sporting a new hairstyle, which starts a fashion trend among the general populace. A celebrity may sport a new hairstyle in a movie, or a music concert, or a performance, but this may be enough to start a trend of copiers in the general populace. Many celebrity hairstyles last for as a fad for a few months or a few years at most. Some hairstyles like that of Jennifer Aniston, Paris Hilton, and Scarlett Johansson are copied quickly.
Many Hair Salons all over the world have images of the latest celebrity hairstyles on the walls of their Salons and in their catalogs, thus enticing the general public to try out the new fashion trends in hairstyles. Many fashion conscious males and females too, religiously follow the hairstyles of their favorite celebrities, and try to imitate their hairstyles. As the saying goes, 'Imitation is the best form of flattery.'