Sienna Miller in Twenty8Twelve by S. Miller

Spotted at London’s Groucho Club earlier this month, Sienna Miller wore another piece from her own design collection — the Twenty8Twelve by S. Miller Matt Denim Shirt and you can buy your very own from Boutique To You. Her jeans are Genetic Denim James Skinny Jeans and the boots are Rag & Bone Classic Newbury Canvas Booties.

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