By Kate Pounds & Rom Preston-Ellis A teenager who used his last £800 to launch a t-shirt business has now ‘made £100k’ – after a chance post on Instagram. Tommy Rawlings’s firm Velocita had little initial success. But when an influencer posted a pictured wearing one of his tops his fortunes changed. Tommy, 19, says he sold thousands of t-shirts in one night. His business has gone from strength to strength since then and now has a turnover of £100k, he claims. Tommy said: “It just went crazy. It happened so fast I could hardly process it. I just saw the money coming in and kept working hard to …