My husband and I discovered this store on a trip to Italy and we both become immediate fans. The clothing has a chic, European edginess, and the price point is reasonable. 

A fantastic selection of luxury & vintage, with free shipping in the U.S. and free returns pick-up service

I discovered this site purely by chance and it's been my downfall ever since. It boasts a huge selection of preowned, designer pieces from sellers around the world...I have found items that were long sold out here in the U.S. by lying in wait on Vestiaire. Don't start browsing unless you're willing to go down a rabbit hole.

This is one of my best secret weapons, as no one has ever heard of this site when I mention it to them. I absolutely love Bona Drag for its fantastic collection of indie designers and perennial favorites. It's also well-curated so you don't get sucked into a time vortex browsing through. 

If I had a penny for every time ASOS has pleasantly surprised me I would be a millionaire. Unbeatable prices for trendy duds, and hassle-free returns to boot. 

This site can be daunting to navigate due to its 300+ designers on offer, but if you go in with a plan (just looking for a great crossbody bag, say) you can score a great find. Free express shipping is a nice bonus, too. 

I like shopping here because it's not an overwhelming sea of wares, just a well-curated selection of cool clothes & accessories at accessible prices. 

Another monolith of the luxury online boutiques with over 600 designers, I like browsing here for hard-to-find-elsewhere items. 

I feel like Mango doesn't get its due credit here in the States. The clothing is on-trend, decently-made, and the prices can't be beat.

Is there a fashion-lover out there who doesn't know this one?

I have both bought and sold a ton on Poshmark. I find the prices to be some of the lowest in the preowned market, and it's very easy to use. If you're so inclined, check out the items I have for sale there by clicking this link.  

I love Shopbop for it's great selection, super-fast shipping and easy returns. I also find that their Trend Edit section is always ripe with inspiration, I never fail to pin a look or place something in my wishlist.

This is the only site I know of where you can preorder runway collection literally days after they debut. Check out the trunkshows & sale section for great deals, and be prepared to lust hard.

In my opinion, Revolve tends to skew younger so maybe not the best destination for more conservative dressers. But they carry many of the fashion blogging set's favorite labels and the range is huge. 

Heard about this site initially over on Man Repeller and it's been a boon on many occasion. Great designer finds, easy navigation, and frequent & very generous sales. I scored a pair of Fendi heels here for under $100 once. I've also sold a fair number of designer items here and they make the process incredibly easy. 

High-end merch but they have sales often, so you can snag some pretty great deals if you're willing to play the waiting game. 

A great selection of new and preowned pieces available here. Unfortunately you can only get credit for returns, so you have to be sure before purchasing.

I couldn't even begin to tell you how many pieces from Zara I have in my closet. This is the store I consistently turn to when I want something stylish without breaking the bank. And I find they're only getting better and better in both quality and design. Zara I just can't quit you.

That's right, I said it. I have gotten a great number of fun graphic tees, cheeky muscle tanks, workout gear, maternity clothing, and the softest lounge sweats ever here. My friend, Selena, swears by the Mossimo jeans, and the prices can't be beat. And come on, where else can you buy a great casual outfit and a toilet plunger in the same place?

After Jenna Lyons and Marissa Webb had their way with J. Crew it was unrecognizable from the super-preppy, conservative brand it used to be. I love their newer, more fashion-forward designs and styling, and I've found many really great basic and not-so-basic pieces.

Imagine Nordstrom Rack online, except instead of having to sift through a bunch of ho-hum to find one great thing IT'S ALL GREAT THINGS. Expect to find a huge selection of deeply discounted designer duds from season slightly past.