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Menswear Inspired

We're not sure if it's a tribute to the late Yves Saint Laurent, who first made sexy tuxedos for women or a nod to the glass ceiling shattering Clinton campaign, but this season is all about menswear for ladies. For his debut collection at Bill Blass, Peter Som updated the late designer's signature mix of masculine fabrics and feminine shapes.

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The Olsen Twins are famous for creating, not following, trends. So it was no surprise when Ashley showed up at last spring's CFDA awards in a classic tux by Calvin Klein, overshadowing the rest of the glamazons in yards of sequins and tulle.

Menswear details are a natural for Zac Posen, who creates some of the most razor-sharp clothes on Seventh Avenue. For fall, looks that borrow from the boys include form-fitting suits (shown) and sheer tuxedo jackets.

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For a weekend in the country, every man...er, woman -- needs a sporting outfit, like these velvet pants and vest pairings by Carolina Herrera. Perfect for the hunt, even if the only thing you're after is a seat at the multiplex. Talley-ho!

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In a homage to Yves Saint Laurent, who gave fashion "Le Smoking," Carolina Herrera wore a white tuxedo to accept her CFDA Lifetime Achievement Award this spring.

In his pared-to-the-essentials fall collection, Chanel designer Karl Lagerfeld offered up a modern twist on a tuxedo-inspired dress.

Antonio de Moraes Barros Filho, WireImage.com

South African-born Charlize Theron showed off her all-American good taste when she arrived at the David Letterman show in March wearing a black blazer and grey flannels. She caught up with Dave to chat about her new film ("Sleepwalking") and her new citizenship (U.S.).

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Etro's newest twist on the tuxedo: short with a sweetheart neckline and a bubble skirt. Oh, and don't forget the bow tie -- worn here around the neck.

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At June's CFDA Awards, council president Diane von Furstenberg honored Yves Saint Laurent in words and style. In ceremonies the day after the legendary French designer's death, she delivered a moving tribute while wearing a classic YSL "Le Smoking".

Jamie McCarthy, WireImage.com

von Furstenberg is best known for her iconic -- and feminine -- wrap dresses, so she naturally displayed a soft hand when borrowing belted jackets and wide-legged trousers from the guys.

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