WHAT SHE WORE: Sienna Miller in red strapless belted gown at the Vanity Fair Oscar Party on March 2 2014

WHO: Sienna Miller at the Vanity Fair Oscar Party on March 2 2014 in Los Angeles

WHAT SHE WORE: she wore red belted sleeveless Alexander Mcqueen dress

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ALEXANDER MCQUEEN strapless gown

photo source: dailymail

Sienna Miller

Short Bio: Sienna Rose Miller (born December 28, 1981) is an American born English actress, model, and fashion designer. Miller's relationship with Alfie co-star Jude Law was scrutinised by the tabloid press. On Christmas Day 2004, they became engaged. On July 8, 2005, Law issued a public apology to Miller for having an affair with the nanny of his children. Read More..