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Sienna Miller topped her white gown with a studded biker jacket and a box clutch, all by Burberry (of course). Then, keeping within the Brit-punk spirit, she slipped into something more casual — Union Jack intact — for later.

Image Source: Getty
Read More BurberrySienna MillerMadonnaCelebrity StyleAmanda SeyfriedRed CarpetAshley GreeneMet GalaCara Delevingne