September is a month filled with fashion. From New York to Milan, designers are showcasing their best runway looks, and with nail polish, it's no different. This month is packed with new collections of metallics, jewel-toned shades, matte and neutral finishes, and the darkest depths of color. Prepare to delve into the season at full speed with these stylized nail polish picks.
Source: Flickr user idhren 
Can't afford those snakeskin boots? Reach for this metallic polish instead. Estée Lauder Viper  ($20), a subtly shimmery deep green, will add just the right amount of amphibian edge to your nail collection.
If you enjoy a silk blouse as much as the next girl, then you'll love China Glaze Swanky Silk  ($7). This rose-gold shade changes in the sunlight, so you're bound to stay surprised.
Everything's Coming Up Roses
Sometimes you miss out on your weekly workout, but painting a few coats of the Essie Yogaga collection counts, right? Try the brand's Marathin  ($8) shade for a rosy, goes-with-everything look.
The newest thing in the textured-manicure trend is the rubber look. Illamasqua Aorta  ($14), an aptly named bright red, will take the place of your favorite galoshes (but you'll still need something for the rain).
While the designers will be sending new ensembles down the catwalk, Chanel has created a special collection for Fashion Week. Its Les Twin-Sets  ($26 per polish) are three limited-edition lipstick and nail varnish duos set to launch on Fashion's Night Out this Thursday.
See Ya Soon
Jin Soon Choi has been lacquering digits of celebrities and models alike for over 20 years. And now she has created her own line of polishes, JINsoon . This rich teal, dubbed Charade, ($18 at SpaceNK ) is our top pick for Fall.
Convert your favorite glossy shades from Summer to Fall with the new Lancome Mat Top Coat  ($15).
L'Oréal has teamed up with Project Runway to create Electric Fantasie, an exclusive Fall makeup collection. This polish, Temptress Power ($6 at drugstores), is a shimmering chartreuse hue that's truly electric — not literally, of course.
All in One
Enjoy the entire Nails Inc. Autumn/Winter collection  ($25) in one set. From red to black (and every trendy shade in between), your Fall nail picks are covered.
Set the season ablaze with this orange metallic hue. Orly Flicker  ($8) is the perfect pumpkin shade to extend 2012's orange makeup trend until year's end.
The Big Splash
Real sapphires may be out of your budget, but this jewel-toned polish is a sufficient substitute. Pantone Reflecting Pond  ($9) is an iridescent navy that brings back fond memories of an oceanside vacation past.
Get in on the military-inspired clothing trend with YSL Khaki Arty  ($25). This flattering warm brown polish pairs nicely with most complexions and finishes with a slightly edgy army-green undertone.
Get your fill of blackberry and eggplants this season with this deep plum polish. MAC Cosmetics Gadabout Girl  ($16) is a chic plum color that lies somewhere between purple and black.