THE RELIABLESThey're the staples you always use, and now they're just a click away.
Head here when you want T-shirts soft enough to sleep in but fashionable enough to wear out. jamesperse.com
The ultimate destination for tried-and-true five-pocket basics connects to Facebook so you can see what your friends are buying. us.levi.com
Choose your modern riffs on preppy evergreens with help from "Jack Knows Best," a useful advice guide from men's style director Jack O'Connor. jcrew.com
Sign up for a "sockscription" and get a fresh supply every four months. blacksocks.com
THE VANGUARDSWhen you're jonesing for fashion with a capital F, get your fix at these stores.
This fashion portal gathers 40 top designer boutiques, located in cities from London to Los Angeles, and puts them under one digital roof. farfetch.com
The full-price shop from the folks behind YOOX (see "The Discount-ers", below) has forward-thinking brands like Kolor Neil Barrett, and Z Zegna. thecorner.com
The British store stocks its own inexpensive collection and thousands more hipster-friendly items from brands like Fred Perry, All Saints, and Barbour. asos.com
Trés Bien Shop
This Scandinavian men's shop stocks minimal suits and pared-down accessories, from the likes of Dries Van Noten and Mismo. tresbienshop.net
THE SPECIALISTSSave money on airfare by browsing the digital homes of these destination boutiques.
Project No. 8
You'll find cool collectibles like L.G.R sunglasses and Natalia Brilli backpacks at this New York emporium. projectno8.com
Paris' most progressive shop is full of oddities you'll have to have, from Sens & Co. cooking kits to Azumi and David pendants. colette.fr
The London stalwart is your go-to site for cutting-edge designers like Balmain and traditional sartorialists like E. Tautz. matchesfashion.com
When you want a West Coast take on the best of America and Europe, sign in to this Los Angeles shop. shopconfederacy.com
THE DISCOUNTERSThanks to a raft of sales-minded sites, it's easier than ever to score deals online.
This offprice fashion portal stocks edgy European brands, from Dior Homme to Maison Martin Margiela, at a deep discount. yoox.com
Gilt's flash sample sales offer great savings, but log in promptly and often because the best styles go fast. giltman.com
Neiman Marcus/Barneys New York/Saks Fifth Avenue
Don't forget the Web sales from fashion heavyweights, which feature some of the best-edited overstock around. neimanmarcus.com; saksfifthavenue.com; barneys.com
A NOTE ABOUT SIZING
There's no perfect way to find the right size when shopping online. Conversion guides like statman.info are a helpful starting point to gauge how British and European clothes will fit, but since designer silhouettes vary from house to house, it's smart to try on clothes in a brick-and-mortar store first. And keep an eye out for digital retailers who don't make you pay for returns.
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