What is a "hipster"? Like define?

someone who does things because they think it's cool; people who follow a heard like a sheep and usually have a certain look too them.

Hipsters are a subculture of men and women typically in their 20's and 30's that value independent thinking, counter-culture, progressive politics, an appreciation of art and indie-rock, creativity, intelligence, and witty banter. The greatest concentrations of hipsters can be found living in the Williamsburg, Wicker Park, and Mission District neighborhoods of major cosmopolitan centers such as New York, Chicago, and San Francisco respectively. Although "hipsterism" is really a state of mind,it is also often intertwined with distinct fashion sensibilities. Hipsters reject the culturally-ignorant attitudes of mainstream consumers, and are often be seen wearing vintage and thrift store inspired fashions, tight-fitting jeans, old-school sneakers, and sometimes thick rimmed glasses. Both hipster men and women sport similar androgynous hair styles that include combinations of messy shag cuts and asymmetric side-swept bangs. Such styles are often associated with the work of creative stylists at urban salons, and are usually too "edgy" for the culturally-sheltered mainstream consumer. The "effortless cool" urban bohemian look of a hipster is exemplified in Urban Outfitters and American Apparel ads which cater towards the hipster demographic. Despite misconceptions based on their aesthetic tastes, hipsters tend to be well educated and often have liberal arts degrees, or degrees in maths and sciences, which also require certain creative analytical thinking abilities.