Negative Underwear Discount Codes for October 2026

Sign up for Negative's emails to get a code for 10% off your first order. The discount applies to eligible bras and underwear, from wireless and underwire bras to thongs, briefs and boyshorts. It doesn't cover loungewear, sleepwear or Sport pieces.

For example, the Sieve Non-Wire Bra starts at $70, so your code takes at least $7 off. If you add the matching Sieve Dipped Thong, which costs $35, you save another $3.50.

To sign up, enter your email address in the pop-up that appears when you land on the site. The pop-up then asks for your phone number to sign you up for texts, but you can close that step and still get your code by email.

Each subscriber gets a unique code. Mine was welcome10ZGM7DMDD, so expect yours to start with "welcome10" followed by its own mix of letters and numbers. Because the code works only once and can't be combined with other discounts or offers, plan to use it on a larger first order instead of a single item.

When you refer a friend to Negative, they get $20 off their first purchase, and you get $20 once they place their order. Both codes work only on orders of more than $75.

To start, go to Negative's referral page and enter your email address. Adding your name is optional. After you click Next, you can invite friends by entering their email addresses or copy your personal referral link and send it however you like. You can also share the link directly on Facebook, Messenger, X or WhatsApp.

If your friend is new to Negative, the referral is often the better deal for them. The 10% email signup code can't be combined with other offers, so they'll have to pick one, and $20 off beats 10% off unless their bra and underwear total runs past $200.

If you wear the same style every day, Negative's underwear packs cost less per pair than buying singles. The brand sells packs of its thongs, briefs, boyshorts and boxers in fabrics including Sieve mesh, Cloud Cotton and Whipped.

Take the Sieve Thong, which costs $32 on its own. Three singles would cost you $96, but the three-pack costs $84, so you save $12. Five singles would cost you $160, but the five-pack costs $136, so you save $24. That brings the price down to $28 a pair in a three-pack and $27.20 a pair in a five-pack.

Negative's Last Chance collection holds marked-down styles that won't come back once they sell out. You can shop bras, underwear, loungewear, sleepwear and swimwear, and filter by size, material or collection to find what's left in your fit.

Most markdowns fall between 10% and 50% off, and the typical item costs about a third less than its original price. Swimwear has the steepest cuts. Some bikini bottoms drop from $80 to $12, an 85% discount, and several one-pieces that normally cost $180 sell for $45 to $54.

Bras and underwear see markdowns of up to 60%. Sieve mesh styles tend to have the biggest discounts, with some bras dropping from $70 or $78 to around $30 and a Sieve String Thong falling from $30 to $12. Whipped styles get smaller markdowns, usually around 15%. Loungewear and sleepwear discounts are mostly modest, typically 15% to 30% off.

Before you buy, check the product page for a "Final Sale" label. Negative doesn't accept returns or exchanges on those items, so make sure you know your size first.

You get free standard shipping on US orders over $100. Below that, the cost depends on your location and shows up at checkout once you enter your address, but it's usually around $5.

Orders typically ship within one to two business days, and orders placed on a Friday afternoon or over the weekend usually go out on Monday. With standard shipping, orders within the continental US should arrive within five to seven business days.

If you need your order sooner, Negative offers two faster options.

• Rush shipping: This costs a flat $25, and your order arrives within two to three business days after it ships.
• Overnight shipping: This costs a flat $35, and your order arrives within one to two business days. Place your order before noon ET for it to ship the same day.

Get Free Returns When You Choose Store Credit

You can return or exchange items within 30 days of placing your order, as long as they're unworn, unwashed and undamaged, with tags attached and in their original packaging. Exchanges and returns for store credit are free, and store credit never expires. If you'd rather get your money back on your original payment method, Negative deducts a $5 restocking fee from your refund.

Sale items work differently. Price-reduced items are either final sale or exchange only, and the product page tells you which. If you used a discount code, your refund reflects the discounted price you paid, not the full price. You can print a return label or skip the printer and return your package with a QR code at eligible USPS locations.

If you're shopping for someone else and don't know their size, a Negative gift card lets them choose for themselves. Digital gift cards come in values of $50, $100, $150, $200, $300 and $400, and Negative sends them by email.

You can also schedule the email ahead of time, so the card arrives on a birthday or holiday instead of the day you buy it. A card worth $100 or more covers enough for the recipient to qualify for free standard shipping on a US order. Keep in mind that digital gift cards are nonrefundable, so double-check the recipient's email address before you send it.

Follow these steps to apply your discount code at checkout.

1. Add the items you want to your cart.
2. Click "Cart" in the top-right corner of the page.
3. Click "Check Out."
4. Find the box labeled "Discount code or gift card" in the order summary.
5. Type or paste your code into the box, and click "Apply."
6. Check that the discount appears in your order summary before you pay. Each discounted item shows the code and the amount it saved you, and your total savings appear below the order total.

When I tested my 10% welcome code on a Sieve Cutout Bra, the price dropped from $70 to $63, and the order summary showed $7 in total savings. If your code doesn't work, make sure your cart includes eligible bras or underwear and that you haven't already applied another discount.

If it's your first time shopping at Negative, the smartest move is to ask a friend who already shops there for their referral link. It takes $20 off orders over $75, which beats the 10% signup code on most first orders.

If you don't have a referral link, sign up for emails to get 10% off your first bra and underwear order.

And once you find a style you love, buy it in a pack. You pay less per pair than you would for singles, and the more pairs in the pack, the more you save.

— Caio Rios, Deal Expert