ThirdLove Bras Put Half-Cup Sizing to the Test

ThirdLove’s strongest documented strength is a precise fit, built around half-cup sizes and an online Fit Finder. Loyal customers say it’s hard to go back to other bras. One shopper praised that “The feature to pick your size was very accurate” — Kathleen Shanley, Trustpilot reviewer (US, 5 stars, Bras). Another wrote “I’ve gotten 5 bras now from them and love them so much!” — Jan Harrington, Trustpilot reviewer (US, 5 stars, Bras). A first-time buyer said “I really like this minimized bra a lot” — LeeAnn Erickson, Trustpilot reviewer (US, 5 stars, Minimizer Bra). ThirdLove is a San Francisco-based intimates brand, with its address listed at 555 19th Street on Trustpilot. Its tagline is that the best bra is one you never think about. What sets it apart is half-cup sizing between traditional cups. ThirdLove says it carries 78 bra sizes, and its Fit Finder quiz matches you to a size in about 60 seconds.

The bestselling 24/7® Classic T-Shirt Bra is about $72–$74 on ThirdLove’s site, depending on the page. ThirdLove’s product page describes memory foam cups, non-slip straps and moderate (demi) coverage, in 76% nylon and 24% spandex. ThirdLove’s blog says its T-shirt bras come in bands 32–44 and cups A–H, including half cups. The 24/7® Classic Wireless Bra is about $68 and comes in cups A–G with standard, + and ++ options, per ThirdLove. Every order is backed by a 100% Fit Guarantee: 60 days to love, exchange or return. Exchanges are free for US orders and about $13 CAD for Canada, according to ThirdLove. Several reviewers mention a return processing fee of about $4.99–$5 per item or order.

The honest caveat: ThirdLove’s Trustpilot reviews are split. 48% are 1- or 2-star, mostly about returns, fees and AI-first support. One buyer wrote “Their return process is terrible.” — Patricia Priest, Trustpilot reviewer (US, 1 star, Bra Return). Another warned that “each returned order charges a $4.99 processing fee” — D P, Trustpilot reviewer (US, 3 stars, Returns).

ThirdLove Highlights and Drawbacks

✅ Half-cup sizing between traditional cups
✅ 78 bra sizes, per ThirdLove
✅ 60-second Fit Finder quiz
✅ 24/7® Classic T-Shirt Bra from about $72
✅ Memory foam cups and non-slip straps, per the brand
✅ Bands 32–44 and cups A–H in T-shirt styles, per ThirdLove
✅ Wireless option with standard, + and ++ cups
✅ 60-day 100% Fit Guarantee
✅ Free exchanges on US orders
✅ Replies to 100% of negative reviews within a week
✅ Fit Stylists who help with sizing, per reviewers
✅ Goodwill credits and discount fixes, per reviewers
❌ 37% of Trustpilot reviews are 1-star
❌ Return processing fees reported by reviewers
❌ AI chatbot before reaching a human, per reviewers
❌ Discount codes can disappear when editing your cart, per a reviewer
❌ Third-party deal orders follow different return rules
❌ Smaller busts with wider bands may struggle to fit, per a reviewer
❌ Online-only shopping means no in-store fitting

Where Our ThirdLove Findings Come From

We checked ThirdLove’s Trustpilot profile directly. It shows a 3.8/5 TrustScore across 169 reviews, with 41 in the last 12 months. The breakdown is 38% 5-star, 6% 4-star, 8% 3-star, 11% 2-star and 37% 1-star. The profile is claimed, and ThirdLove replies to 100% of negative reviews, typically within a week. Trustpilot notes it hasn’t invited reviews recently, so most reviews are unprompted. Prices, sizes and the fit guarantee come from ThirdLove’s official product pages and blog. GlossGirly has no commercial relationship with ThirdLove that affects this verdict.

Comfort note: A bra that digs in, leaves deep marks or causes pain doesn’t fit, so exchange it rather than wearing through discomfort. If you’ve had breast surgery, are pregnant or breastfeeding, or have ongoing shoulder or back pain, ask your doctor or a professional bra fitter for advice. Wash bras on cold and air dry them to keep their shape.

Inside ThirdLove: Fit, Fabric, Returns and Service

Fit and Sizing

ThirdLove’s half-cup system is its core strength. Reviewers say the Fit Finder recommends sizes accurately, and many who struggle between cup sizes finally find a comfortable fit. Fit Stylists also help adjust sizes when the first try isn’t perfect.

Not everyone fits the range. One reviewer felt ThirdLove doesn’t suit smaller busts unless the band is very narrow, and an independent guide notes the range doesn’t go beyond an H cup. Use the Fit Finder, then exchange if needed within 60 days.

Fabric and Comfort

Reviewers consistently praise ThirdLove’s soft fabrics and memory foam cups that mould to your shape. The 24/7® Classic T-Shirt Bra is designed to be invisible under clothes, with a no-show double-layer back and stay-put straps.

Some customers have had bras fail after a few months, but reviewers say ThirdLove replaced them quickly.

Returns, Fees and Checkout

Returns are ThirdLove’s weakest area. Reviewers report processing fees of about $4.99–$5, sometimes charged per order even when items share one box. Others found it hard to start a return when the system said an order hadn’t arrived. ThirdLove’s replies say some fees were refunded, and third-party deal orders follow different rules.

Checkout can be frustrating too, with discount codes disappearing when shoppers edit their carts. Apply codes last, and screenshot your cart before paying.

Customer Service

Human support gets strong praise. Reviewers name Fit Stylists who reshipped orders, applied missed discounts, issued goodwill credits and helped with sizing. The front-line AI chatbot is the main complaint, since it asks for details before connecting you to a person.

Have your email address and order number ready to get through the chatbot faster.

ThirdLove Bras We’d Shortlist

24/7® Classic T-Shirt Bra 

ThirdLove calls this the first bra made in half-cup sizes, and it remains the brand’s bestseller. It features ultra-thin memory foam cups, adjustable stay-put straps, smoothing sides and a no-show back, per the product page. It offers moderate (demi) coverage and is designed to disappear under T-shirts and fitted dresses. ThirdLove’s blog lists bands 32–44 and cups A–H, including half cups. It’s the best starting point for anyone new to the brand.

24/7® Classic Wireless Bra 

The wireless version keeps the structured memory foam cups and precise sizing without an underwire. ThirdLove’s guide says it uses standard, + and ++ cup increments from A to G. It suits all-day comfort, working from home and travel. According to ThirdLove, larger cup sizes may want more support for high activity. It’s covered by the same 60-day fit guarantee.

24/7® Classic Unlined Minimizer Bra 

The Minimizer offers full coverage and reduces the appearance of bust size under clothing, according to ThirdLove’s comparison chart. One reviewer loved hers and got help from a Fit Stylist to fine-tune her size. It suits fuller busts that want a smoother, more streamlined shape. Unlined cups feel lighter and more breathable than foam. Use the Fit Finder, as minimizer sizing can differ from T-shirt bras.

24/7® Classic Perfect Coverage Bra 

ThirdLove describes the Perfect Coverage Bra as a bestseller for fuller coverage. It offers more coverage than the T-shirt bra while keeping the brand’s half-cup precision. It suits anyone who wants extra security and smoothing for everyday wear. It’s a strong option for plus sizes within ThirdLove’s band and cup range. Check the fabric and coverage details before ordering.

Customer Voices on ThirdLove Fit and Returns

“don’t seem to fit smaller bust unless you are very thin band width” — suramom, Trustpilot reviewer (US, 5 stars, Bras)

“inability to edit your cart” — Nancy, Trustpilot reviewer (US, 4 stars, Discount Code)

“They sent out another order to my correct address right away.” — Ash, Trustpilot reviewer (US, 5 stars, Misdelivered Order)

“it seems it is only refundable (with a refund fee, of course)” — Janice Z., Trustpilot reviewer (US, 1 star, Wrong-Size Bra)

“Clara retroactively applied my discount.” — Cynthia, Trustpilot reviewer (US, 5 stars, Discount Code)

Who Should Buy From ThirdLove

ThirdLove suits anyone who falls between cup sizes and wants an everyday bra that genuinely fits. Take the Fit Finder before ordering, and buy directly from ThirdLove rather than third-party deal sites to keep the standard fit guarantee. Try your bras at home for a few days, then exchange quickly if the fit isn’t right. Apply discount codes at the last step of checkout. Expect a small return fee if you send items back for a refund rather than an exchange.

ThirdLove Compared With Honeylove, SKIMS and Soma

ThirdLove Buyer FAQs

What are ThirdLove half-cup sizes?
They sit between traditional cup sizes, such as 34B½, to give a more precise fit, per ThirdLove.

What is ThirdLove’s return policy?
ThirdLove offers 60 days to love, exchange or return, with free exchanges on US orders. Reviewers report a small processing fee on refunds.

How accurate is the ThirdLove Fit Finder?
Many reviewers say it’s accurate, and Fit Stylists can adjust your size if needed.

What sizes does ThirdLove offer?
Its T-shirt bras come in bands 32–44 and cups A–H with half cups, per ThirdLove.

Can I return a ThirdLove bra bought through a deal site?
Third-party orders, such as those from Good Morning America deals, follow different rules, according to ThirdLove’s replies.

The Final Word on ThirdLove

ThirdLove’s half-cup sizing, comfortable fabrics and helpful Fit Stylists make it one of the best online options for an everyday bra that truly fits.

Returns are more complicated than they should be, with processing fees and an AI-first support process. Use the Fit Finder, buy direct, and exchange early, and ThirdLove can solve the bra-fit problem for good.

ThirdLove Scorecard by Category