Homecelebrity fashion Sienna Miller in silk peach maxi dress at San Sebastian Film Festival wantherstyle Wednesday, September 23, 2015 WHO: Sienna Miller on the red carpet at San Sebastian Film Festival on September 22 2015 WHAT SHE WORE: Sienna wore peach silk maxi dress from Galvan London BUY: GALVAN SILK SATIN BIAS CUT DRESS celebrity fashion dress fashion galvan maxi dress red carpet sienna miller what she wore Facebook Twitter