The term hipster today means something quite different from what it represented when it was invented in the 40s.
But like any trend that survives has evolved, it has become something vague.
You can be defined hipster for the way of thinking, for the music you listen to, for a style of dress or just a beard.
In any case Berlin is definitely a city for hipster, full of hipster; to the point that they even have a festival, which this year reaches its fifth edition.
Saturday, July 4, 2015, at Neue Heimat in Friedrichshain, starts at 12:00, then the fifth Hipster Cup Festival.
Games, contests, music and food, a day of fun, humor and desire to not take itself too seriously.
More info here.