Go to secondhand stores, vintage clothes shops, market stalls, bring and buy sales etc. once you're prepared to rummage around you can find some great original pieces. Boho-chic is really in atm so you should be able to pick up some high street stuff too. Mix it up with a few nice vintage one offs and you'll be guaranteed not to bump into someone in the same outfit. Happy Shopping

*If you ever get to Ireland visit Jenny Vander, Georges St., Dublin - it's the ultimate vintage clothing store and my absolute favourite place to shop