Found on fun site : Queen of the Posh and Broke

Runway to Real-way: Chanel Sunglasses

When i first saw these sunglasses on the Chanel Spring 2007 catwalks, although i though they were uniquely cool, i never thought the harsh contrast between the black lens and clear lens would adapt very well into everyday eye wear, but once again Young Hollywood's, Miss Nicole Richie and Ashley Olsen have taken the risk to try the unusual. And i think they both work these Chanel sunglasses into their personal style really well.

Perhaps it's because we've seen Nicole Richie in some outrageous size sunglasses and the Olsen's are always on the bandwagon to try new things so these sunglasses seem normal.