Savannah Elizabeth Louise Miller[2] (born 30 December 1978)[3] is a British and American fashion designer.

After working with Alexander McQueen and Matthew Williamson, she created the label "Twenty8Twelve" with her sister, Sienna Miller.

On leaving school she went to the Central Saint Martins College of Arts and Design, graduating in 2004 with a first-class honours BA degree in Fashion and Knitwear.

[10] Sometimes associated with the term "boho-chic",[9] in 2006 Miller described a "real bohemian" as "someone who has the ability to appreciate beauty on a deep level, is a profound romantic, doesn't know any limits, whose world is their own creation, rather than living in a box".

[6] However, she dislikes the word "bohemian",[11] and the Sunday Times used the term "rural chic" for a collection she designed and modelled for the Hong Kong label Shanghai Tang.