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While we love seeing fresh new things from our favorite big brands, their very best pieces have been around for years. Click through for nine signature styles we count on each season.

The Brand: Yves Saint Laurent/Saint Laurent

The Signature: Le smoking jacket

The Origin: Five years after his label's 1961 launch, Yves Saint Laurent stuck gold with his feminine take the classic men's suit. Women went wild for the full-on gender-bending look—a tailored pantsuit worn with a fedora and stilettos—especially the sleek, slim le smoking.

The Evolution: Not does nearly every contemporary label out there right now carry some sort of le smoking-inspired boyfriend blazer, but Saint Laurent (as the label was recently renamed by its current creative designer, Hedi Slimane) sells the style as part of its "permanent collection." And while it'll set you back nearly $3,000, remember that it's been unwaveringly cool for over 50 years; so really, there's no way you'll get sick of this style.

The Brand: Dior

The Signature: The Bar jacket

The Origin: Following a decade of strict wartime fabric rations, the 1947 debut of Christian Dior's Bar jacket felt so luxurious and new. Between the flattering effect of its cinched-in waist and the decadent way it flared into a full peplum, fashion-starved women everywhere immediately fell in love.

The Evolution: Although each successor of the label's eponymous founder has left his own unique stamp on the famed fashion house (Yves Saint Laurent pioneered the "Trapeze dress"; John Galliano, the "Saddle bag"), they've all paid homage to the Bar jacket design. Most recently, we spotted a sleek, all-black version in Raf Simons' Spring 2014 collection for the brand.

The Brand: Chanel

The Signature: Tweedy jackets

The Origin: So iconic is Madamoiselle Coco's boxy tweedy jacket, it's hard to believe she didn't release it until 1954 (at age 71!), nearly five decades after opening her famous hat shop on 21 Rue Cambon. Following several years of lackluster business, the neat, collarless outerwear brought her company back to the forefront of fashion, where its (obviously!) remained since.

The Evolution: Along with other Coco-approved classics—layered strands of pearls, quilted handbags, ballet flats—the tweedy jacket is in important component of every Chanel collection that goes down the runway. Sometimes it's neon, sometimes it's paired with sneakers, but the fitted cut and wooly fabric are always the same!

The Brand: Burberry

The Signature: Trench coats

The Origin: While the British brand has specialized in gabardine outerwear from the outset (its founder, Thomas Burberry, launched the label in 1856 and patented the stiff, waterproof fabric in 1888), its signature trench didn't hit the scene until WWI, as part of Great Britain's military uniform. Soon after, the tie-waist design was modified and sold to the general public.  

The Evolution: These days, every collection Burberry sends down the runway includes a new riff on the double-breasted style—we've seen it printed, covered in studs, made from leather and more. As for the basic khaki version, there's plenty of that, too: the company produces and sells it year-round.

The Brand: Max Mara

The Signature: Camel coats

The Origin: Founded in 1951 by Achille Maramotti, this brand has always focused on quality outerwear; in fact, its very first collection featured a simple camel coat! Its most famous style, though, a double-breasted design with kimono sleeves called the "101801," wasn't released until 1981.

The Evolution: Along with the classic 101801, which Max Mara recuts every season, the label offers many button-free, tie-waist styles. It's an equally flattering cut, and good for women who prefer to define their waist (like Kim K).

The Brand: Louis Vuitton

The Signature: Luggage

The Origin: Considering the dozens of memorable RTW collections the brand has turned out—pastel separates presented on a merry-go-round, clean-lined '70s-style ensembles we'd wear every day if we could—you might be surprised to learn it was founded as a small luggage shop in 1854. But that LV monogram you know and love was there from the very start!

The Evolution: When designer Marc Jacobs was charged with expanding the company in 1997, he stayed true to its heritage by working the signature LV monogram into a new line of handbags (many of which were roomy and travel-ready). Now that Nicolas Ghesquière is head of the house, though, don't expect to see the motif disappear: not only did every look that walked his debut show for the house included some subtle form of the logo, but many of the bags were sturdy and suitcase-shaped.

The Brand: Hermès

The Signature: Silk scarves

The Origin: A family-run harness workshop opened in the mid-nineteenth century, Hermès passed through the hands of three generations before introducing scarves—or carrés—in 1937. It's been selling them ever since.    

The Evolution: Because Hermès puts the same painstaking care into designing and producing its scarves now as it did 77 years ago, the design hasn't changed much. How it's worn, however, has: whereas the silk style used to be exclusively worn around the neck, women these days make them work as headbands, belts and more.

The Brand: DVF

The Signature: Wrap dresses

The Origin: Four years after the 1970 launch of her label, Diane von Furstenberg created the wrap dress for independent women looking to leave one-night stands in the most quiet way possible. Without any buttons or zippers to worry about, the style made getting dressed fast and easy for a new generation of young women balancing their careers and social lives.

The Evolution: Diane is still at the helm of her namesake company, and wrap dresses are still a major part of its DNA. The style's been especially popular this year, after making several stunning appearances in American Hustle, a period movie set in the '70s.

The Brand: Valentino

The Signature: Red dresses

The Origin: You can trace Valentino's trademark "Valentino red" right back to a single crimson dress from the house's 1959 debut collection. For there on out, the brand's eponymous designer, Valentino Garavani, incorporated the shade into every collection he sent down the runway.

The Evolution: Since Mr. Garavani's 2007 retirement, the labels current creative heads, Maria Grazia Chiuri and Pier Paolo Piccioli, have kept his tradition alive by including plenty of cherry-colored gowns, shifts and accents in their work every season.