Sienna Miller in Matthew Williamson at London BAFTA | Video

Sienna Miller Looks Summery and Sweet in Seafoam

Sienna Miller made headlines in her Burberry getup at the Met Gala last week. Now she's back in London and going for a much sweeter approach in seafoam. Watch our Fashion Flash for the full scoop. On Allison: Club Monaco top, Express skirt.

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