I know Christopher Bailey supposedly got the idea for the SS07 Burberry Prorsum line from early Cecil Beaton photographs, but because I must draw links between things I love, here's where I think it (however derivatively or unconsciously) actually traced a branch of its roots to:
La Balançoire (The Swing), 1876 Burberry Prorsum Spring/Summer 2007
It actually looks like they sawed off the dress in the painting a bit above the knee, removed the blue bows (half the reason why I'm so fond of it) and made some trivial cosmetic changes. Even the hair looks like the style in the picture. Not that that's a bad thing, mind you, Renoir was and is one of my favourite artists and I don't care if people say his early work is too fluffy, pretty and sun-dappled- I still love it, and I still intend to have a print of Le Bal au Moulin de la Galette on the walls of my first apartment when I get one.