Selling clothes plastered with memes, gifs and poop emojis, Shop Jeen has Gen Z and Y set firmly in its sights. But how has 23-year-old founder Erin Yogasundram – dubbed the “Queen Bee Of the internet” – amassed a cult following without spending a single dollar on advertising?

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?

Handbag real estate is in short supply. Women carry around 40 items in their bags – from iPhones, to spare knickers. Stowaway makes ‘right sized’ cosmetics; small enough to be slipped into a clutch. Can this tiny beauty brand disrupt the big players in a $60 billion beauty industry?

Since its launch in 2012, swimwear brand Triangl has been enjoying a long stint in the sun; set to rake in $60 million in 2015, it's sold almost a million bikinis. But what is it about these neon, neoprene numbers that’s got girls going wild on beaches across the globe?