The fact Katy Perry and Nicky Hilton have already worn the Matthew Williamson for H&M peacock print dress clearly didn't bother Mischa Barton. Nothing could stop the actress throwing on her new dress just 24 hours after purchasing it. We know what it's like Mischa, you can't resist rocking out your brand new favourite summer outfit. Especially when it's a credit crunch friendly version of your favourite designer dress. Just one request. Leave one on the shelves for us!