The 1990s was a decade of influence from American culture on British youth. Blockbuster films from the US became hugely popular and portrayed teenagers in specific ways. American sitcoms and animated shows challenged comedy norms. Music in the UK shifted from grunge to Britpop and rave culture. Fashion trends like flannel shirts and curtained haircuts rose to popularity, along with the iconic hairstyle of Jennifer Aniston's character on Friends. While American influence remained strong, underground scenes in Britain began to find prominence through genres like acid raves.