The hipster is defined as the embodiment of Postmodern Irony. But it's not the only group striving for leadership over pop culture; New Sincerity has been singled out as another ideology contender. Is there really a 'battle of the principles'? And how are adverts reflecting this?

For today's youth, neo-tribalism is the new clique. Leaving blind conformity behind, these fast-moving, flexible cultures are a cocktail of affiliations and references, always shifting and reforming. But if everyone can be whoever they like, how do you know who’s in or out?

One in three teens claim they could make money by creating YouTube videos. The success of social media stars like Bethany Mota shows that celebrity endorsements aren't influential as they used to be. Today's teens want inspiration from cool kids who could easily be their mates.

Since 2011, Dolls Kill’s candy-coloured rebellious clothing has proved a hit with the Tumblr set, with sales reaching $7.5 million in 2013. But how has this brand managed to sell ‘bad acid trip’-inspired miniskirts by the bucket-load without any traditional marketing?