A View of Dior Fashion Show 2012 {Perfume Images & Ads}
They went full-scale and extravagant for the first Raf Simons' Dior fashion show on July 2, 2012. Le Monde reports that 22 species of flowers were used, among which were roses, delphiniums, orchids.
The rationale behind the tapestries of flowers is simply that Christian Dior loved flowers. It's reportedly an attempt at transposing the Granville family garden onto the catwalk.
Photo: Dior Couture (you can click on it to expand the image)