I think this is Very Nice (DM link but don't be scared, just look at the frock and move on) -
www.dailymail.co.uk/tvshowbiz/article-2907284/Dotty-look-Daisy-Lowe-leads-fash-pack-scarlet-dress-GQ-fashion-dinner-London-Collections-Men.html
I have used all of my Google abilities to work out where it is from, but no joy - anyone clever out there?