Last week Ginnifer Goodwin proved her fashion credentials by being first in the race to wear Matthew Williamson's new collection for H&M and now look which stars have followed suit... Katy Perry and Nicky Hilton both stepped out this weekend wearing the peacock motif dress, with the socialite teaming it with one of Matthew's clutch bags for the high street too. Lest we forget, the range doesn't hit stores until 23 April so mere mortals will have to wait until then to get their hands on the dress. In the meantime, we can play the traditional 'who wore it best?' game though. We vote Katy – she's just having a fashwan moment right now!