Popsugar Fashion Sienna Miller Sienna Miller Met Gala Dresses Sienna Miller Is the Real Met Gala MVP in the Room — Care to Disagree? May 10, 2018 by Lucy Jane View On One Page Photo 10 of 10 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 10 Sienna with designer Christopher Bailey. Previous Next Start Slideshow Sienna MillerMet GalaRed CarpetVogueDressesBritish Celebrities