The classic hairstyle, reminiscent of Audrey Hepburn, was the perfect complement to Sienna's glowing complexion, statement diamond necklace, drop earrings and stunning nude floor-length Stella McCartney gown.
Nobody can switch from bohemian street style to red carpet radiance quite like Sienna.
We love this take on the classic bun. What do you think of Sienna's simple updo?
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