Karl Lagerfeld has been busy behind the camera again, this time shooting a trailer for "Shopping Fever," - a short film which doesn't actually exist. Starring Dree Hemingway, Abbey Lee Kershaw, and Baptiste Giabiconi, the film is to present Chanel's Pre-fall 2010 collection. Speaking of screen time, rumours are swirling that the designer will soon make a cameo appearance on Gossip Girl. Paparrazi snapped Lagerfeld with Blake Lively as they stepped out together from the Ritz in Paris, where GG is currently filming. Lively and co-star, Leighton Meester, appeared on the front row at the Chanel couture show.