By Elinor Smith
Skip the costume-in-a-bag: Invest in an item you can use even after October 31.
Pearl Strand Necklace by Express
Channel a 1920s flapper-or even Coco Chanel herself-by wearing this 60-inch strand of acrylic-and-glass pearls with a loose-fitting black shift dress. After Halloween, double-loop them over a silky work blouse.
To buy: $35, express.com.
Related: 10 Silly Halloween Costumes for Pets
Belle of the Ball Skirt by ModCloth
If you're obsessed with Mad Men (and who isn't?), then get dolled up Betty Draper-style in a tulle-lined satin skirt-with red lipstick and a faux cigarette in hand, of course. Later on, the skirt will be your go-to for cocktail parties.
To buy: $50, modcloth.com.
Related: 5 Spooky Halloween Cocktail Recipes
3/4 Length Dress by Vero Moda
With this sequined polyester dress, all you have to do is supply the fairy dust and wand to create a look that's positively magical. Better yet, you'll have your New Year's outfit set, too. Also available in steel grey.
To buy: $112, yoox.com.
Related: 7 Picks for Halloween Faces
Ethnic Chandelier Earrings by Forever21
Slip on these gold-tone statement earrings with a peasant blouse, head scarf, and last summer's maxi skirt, and watch yourself transform into an exotic gypsy. Or add a crystal ball and, poof, you're a fortune-teller. These danglers also work wonders for spicing up your regular-old jeans.
To buy: $7, forever21.com.
Related: 6 Statement Earrings
French Sailor's Shirt by L.L. Bean
Put on this nautical top with navy wide-leg pants and say a hearty "Ahoy, matey!" or two. Extra points if you add a white sailor cap. A true classic, this relaxed-fit cotton shirt goes with anything from a black skirt to jeans. Also in three other color combinations.
To buy: $30, llbean.com.
Related: Comfortable Fall Weekend Wear
Romanian Blouse by Calypso
This embroidered cotton blouse is pretty groovy all on its own. Once you throw on bell-bottoms, platforms, and a headband (tie-dye, preferably), you'll really be far out, man. Also available in chambray, blush, and acid.
To buy: $129, calypso-celle.com.
Related: Classic (and Easy to Wear) Fall Fabrics
Oversize Leopard Scoop Tank by Bebe
This micromodal leopard tank will stay fashionable for years, but for now, it becomes a purrr-fect cat getup. Don't forget the whiskers and pointy ears.
To buy: $34, bebe.com.
Related: Update Your Wardrobe by Mixing Prints
Hick Ory by Bronx
Related: Bootie Buying Guide
Lasso these teak-colored leather boots to partner with a cowboy hat and your most beaten-up jeans. And when you're not playing dress up, they'll stylishly complete all your casual fall looks. Also available in black.
To buy: $175, piperlime.com.
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By Elinor Smith