Sienna Miller wore a baby-blue velvet dress to be her sister 's maid of honor

For Savannah Miller’s wedding, maid-of-honor Sienna Miller wore an ice-blue ’90s slip. Vogue gets an exclusive first look at the dresses for the wedding.

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Sienna Miller wore a baby-blue velvet dress to be her sister 's

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Sienna Miller wore a baby-blue velvet dress to be her sister 's

Sienna Miller Wore A Baby-Blue Velvet Dress To Be Her Sister 's

Sienna Miller Wore A Baby-Blue Velvet Dress To Be Her Sister 's Maid Of Honour

Sienna Miller wore a baby-blue velvet dress to be her sister 's

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