Popsugar Celebrity Mamie Gummer Pictures from Glastonbury New York Book Launch 26 May 2010 by POPSUGAR Celebrity UK 0 Shares View On One Page Photo 0 of 10 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 0 Pictures from Glastonbury New York Book Launch Previous Next Start Slideshow Mamie GummerMichelle TrachtenbergAgyness Deyn