Not Your Mother’s Underwear

Lace Thongs

Vanishing Edge Panties

Avoiding the panty line is one of the very basic tenets of fashion. If you're wearing slacks or a fitted skirt, a thong or pair of very thin panties is a necessity. These ones have patented technology with breathable stay-put silicone for a no-show look and a no-ride fit.

To buy: Soma, $17

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Lace Underwire Bra

Every girl needs a basic black bra to go under her little black dresses. This beautiful option, by Dream Tisha 965, has the support and sexiness you need for date nights and other special occasions.

To buy: Nordstrom, $76

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Cloud Swing Bra & Briefs

From Elle Macpherson's collection, this playful set can be worn under just about anything … and will instantly make you feel sexier. (Funny how a matching set can do that.) This one, with an innocent girl-next-door look, is perfect for the mom who's a little shy about embracing her sexuality.

To buy: Nordstrom, $60

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T-Shirt Bra

Every woman needs a great T-shirt bra, and a little underwire or push-up action is best for giving some definition (and, if you're wearing a V-neck, you'll probably want a little cleavage). T-shirt bras don’t have to be always be totally plain—the fun lace detail on this one, by Wacoal, adds a whimsical touch to an otherwise basic-looking bra.

To buy: Bare Necessities, $57

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Shaping Thong

These Skinnygirl panties are the ultimate triple threat. Not only are they sexy and sophisticated, but they also help hold things in place. The high waist is perfect for women who need a little belly support but don't want to feel constricted … and in back, the thong prevents any granny panty feelings.

To buy: Bare Necessities, $22

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Wireless Bra

If you'd rather go braless than wear an underwire, this barely-there bra is for you. It's great for day-to-day wear, yet still stylish (with a hint of sexy). The wine color is great for fall, and the polka dot and lace details will certainly buoy your mood.

To buy: Gap, $36

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MORE: The Best Little Black Dress for You