At the age of 26, most people will have scraped together enough money to buy a car, maybe put a deposit down on a modest flat and will be climbing the rungs of the career ladder. That is unless you're Dustin Moskovitz, the youngest billionaire in the world.

The 26-year-old from Washington DC has a net worth of $2.7bn, mainly through his co-founding stake in Facebook. This makes him the youngest member of the annual Forbes billionaires list, published today.