Icebergs are melting, sea levels are rising and environmental catastrophe looms. But for Chanel's Karl Lagerfeld, that's no excuse not to look your best.

Chanel Fall 2010

Lagerfeld's parade of climate change chic opened Paris Fashion Week. And, it ended with fun on the catwalk thanks to Nathalie Rykiel who brought a breath of fresh air on Sunday.

Japanese designer Tsumori Chisato showed off a Turkish inspired collection at the Carrousel du Louvre in Paris. And Sir Paul McCartney was also in Paris,to watch his daughter Stella present her latest collection.

Amid a monumental set of massive icebergs - made out of real frozen water - Lagerfeld sent out models in fur-covered tweed skirt suits splashing in shaggy cavewoman boots through puddles of Arctic melt at Tuesday's fall-winter 2010-2011 ready-to-wear show. It was a strong display that highlighted not only Lagerfeld's ability to reinvent Chanel's trademark looks season after season, but also fashion's capacity to appropriate the hot-button issues facing humanity and turn them into fodder for trends - even using the issues that scare us most.