Style Spotlight: Sienna Miller

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Sienna Miller, in Alessandra Rich.

Sienna Miller looked divine in an ivory Alessandra Rich gown at The Girl screening, during the 20th Hamptons Film Festival in East Hampton, New York.

The off-white Spring 2012 dress featured open, billowy long sleeves, giving the sleek column a whimsical touch.

The British actress completed her goddess gown with a red clutch, gold cuffs on each arm and a low-key beauty look with nude lips and loose bright blonde strands.