Someone who is very influenced by the most recent ideas and fashions 2.
In the 21st century, a hipster is a member of a subculture that is defined by claims to authenticity and uniqueness outside of the mainstream culture, while ironically and perhaps even consciously conforming to the collective style of the subculture itself. The subculture embodies a particular ethic of consumption which seeks to commodify the idea of rebellion or counterculture through using fashion as a marker of identity.
Hipster definition, a usually young person who is trendy, stylish, or progressive in an unconventional way someone who is hip.
A young, usually urban bohemian who cultivates an ironic sensibility.