The Hat: The wind-turbine and solar-panel look that made up the set at Chanel turned thoughts to energy (this was a very upbeat Chanel show after all) and then the weather. With regard to the latter, the message was: shield your face from the sun's rays with a super-sized brimmed hat. Big brims were a Paris trend, seen also at Saint Laurent and Hussein Chalayan, who fused a floppy hat with a visor. Fashion tip: Get a hat. Make it wide of brim.