Savannah & Sienna Miller

Savannah & Sienna Miller
sienna and savannah millerIt's no wonder Sienna Miller has such good style... Her sister, Savannah, is an esteemed fashion designer who has worked for Alexander McQueen and "best friend" Matthew Williamson. In 2007, the two sisters launched their own label, Twenty8Twelve. They served as co-creative directors of the brand for 12 successful seasons, until 2012 when they both stepped down to peruse other interests. Savannah recently started her own self-titled label, Savannah, which has been doing incredibly well since its launch in October 2012. [photo via]
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