The fall 2010 collections may offer the best clothes for working women since Yves St. Laurent introduced the sleek "Le Smoking" pantsuit in 1966.In Milan, Gucci, Jil Sander, Etro, Marni, Dolce & Gabbana, Prada, Bottega Veneta and Aquilano Rimondi all showed elegant, classic versions of women's suits—tailored jackets with either pants or skirts to match. In New York, Marc Jacobs, Michael Kors and others did the same. Now it's up to the French—who are just starting nine days of runways shows in Paris—to shape the trend.

It's hard to overstate how different the new suits are from the dominant styles of the past few years. Very recently—until about two weeks ago, in fact—being "matchy-matchy" was considered a fashion crime. Florals could be mixed with plaid and sable with denim. But a tailored jacket that matched its pants or skirt suggested a blind eye toward style. A key look was a dress worn with a cardigan, Michelle Obama-style. Now, it looks as if designers have moved on from the first lady to adopt Xerox Chairman Anne Mulcahy as a muse.
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