Buying lingerie online has one obvious advantage —range and privacy— and an equally obvious problem: you cannot try it on. The difference between getting it right and stacking up returns almost never comes down to the brand. It comes down to how the shop operates: whether it publishes real measurements, whether it accepts underwear returns, how it packs the parcel and what happens when something goes wrong.
This guide is not a ranking. We do not charge anyone to appear here and we have no deals with any retailer, so instead of telling you «buy from X» we give you the criteria to judge any shop yourself in five minutes.
The seven criteria that actually matter
| Criterion | What to look for | Red flag |
|---|---|---|
| Sizing | Measurements in centimetres per product, not one generic site-wide chart | Only «S/M/L» with no equivalents |
| Returns | Clear window (14-30 days) and specific terms for underwear | «No returns accepted», full stop |
| Product page | Fabric composition in %, country of manufacture, garment measurements | Three lines of generic copy and stock photography |
| Shipping | Plain packaging stated explicitly and a discreet name on your bank statement | Nothing said about packaging at all |
| Final price | Shipping and customs visible before you enter card details | Charges that appear at the last step |
| Support | A real email or phone, physical address and company details in the legal notice | Just a contact form and no identity behind it |
| Reviews | Verified reviews off-site, with customer photos | A hundred five-star reviews all posted the same week |
If a shop fails two or more of these, the price no longer compensates: you will pay the difference in returns, in garments that do not fit, or in wasted time.
Types of shop and what each is good for
Not all shops compete on the same thing. Before comparing prices it helps to know which category you are looking at, because each model has a different strength.
| Type | Strength | Weakness | When to choose it |
|---|---|---|---|
| Specialist own-brand | Consistent sizing across models; predictable quality | Higher price, smaller catalogue | When you already know your size and want to repeat |
| Large fashion chain | Easy returns, stock and physical stores to try on | Sizing aimed at the average, limited cup range | First purchase or basics |
| General marketplace | Huge price range and variety | Third-party sellers: unpredictable quality and sizing | Accessories and single-use pieces |
| Adult / specialist shop | Specific catalogue, real advice, discretion | Less stock, slower shipping | When you want something the high street does not carry |
| Monthly subscription | Discovery without deciding every month | Hard to cancel in some services; pieces you did not pick | Only once sizing is already solved |
Sizing is 80 % of the problem
Most bad experiences buying lingerie online are not a quality problem: they are a size problem. A European 90B is not the same as a British 34B across all brands, and the same number can fit differently depending on the underwire shape or how stretchy the fabric is.
- Always measure your underbust and bust before buying. Do not rely on the size you take in T-shirts.
- Look for the measurement chart for that specific product, not the shop’s general one.
- If the maker gives garment measurements (waist width, rise), compare them with a piece you own that fits well.
- When in doubt between two sizes, take the one that leaves room in the band: an underwire that digs in will not «soften» with wear.
We walk through it step by step, with European, UK and US equivalents, in our size and fabric guide.
Returns: read the fine print before you pay
In the European Union you have a 14-day right of withdrawal on distance sales, but the rules allow sellers to exclude «sealed goods not suitable for return for hygiene reasons» once opened. Underwear and swimwear fall squarely into that exception, so each shop applies its own policy.
Discretion: what «discreet shipping» actually means
It is the most repeated promise and the least specified. A shop that genuinely cares about discretion spells out three things:
- The outer parcel: plain box or envelope, no logo and no description of the contents on the label.
- The sender name: a neutral trading name, not the shop’s.
- The bank descriptor: how the charge will appear on your card statement.
If the site just says «discreet shipping» without detailing any of the three, assume it is not guaranteed and ask before ordering.
Red flags of an unreliable shop
- Permanent 70-80 % discounts with an «offer ends in 4 minutes» timer that resets when you reload.
- No legal notice, no company number, no verifiable physical address.
- The same product photos appear on dozens of other sites.
- The only payment methods are bank transfer or crypto — no card, no PayPal.
- Delivery estimates of «15 to 45 days» without explaining that the parcel ships from outside the EU (and without warning about customs).
None of these is conclusive on its own. Two or three together are.
Frequently asked questions
Can you return underwear bought online?
It depends on the shop. The law allows sellers to exclude sealed hygiene items once opened, but many retailers do accept returns if tags and the hygiene strip are intact and the garment has not been washed. Check before you pay, not after.
Is a specialist brand worth the extra money?
For underwired pieces and for sizes outside the central range, usually yes: better pattern-making and consistency between models save you returns. For wire-free basics the difference is much smaller.
How do I avoid customs surprises?
Check where the shop ships from. If the parcel leaves from outside the European Union you may have to pay VAT and a handling fee on delivery, which easily adds 25-30 % to the price you saw on the site.
Carry on with our buying guides or head back to the directory to see everything organised by topic.