How to Measure for Lingerie (Accurate, Consistent Results)
Tools & Setup
Use a soft fabric measuring tape, measure on bare skin or over thin, non-padded lingerie, and stand naturally. Keep the tape level (parallel to the floor), snug but not digging into skin. If you are between sizes, prioritize comfort and fabric stretch: delicate lace and rigid corsetry fit very differently.
Tip: Measure twice and write down results in both inches and centimeters if you shop globally.
Measure around the ribcage directly under the bust. Tape should be level and snug.
Same as underbust, but snugger (still comfortable). Useful for band sizing and support.
As tight as you can comfortably pull the tape. Helps when between band sizes.
Measure around the fullest part of the bust (usually across nipples), tape level.
Optional: measure standing, leaning forward 90°, and lying down for best cup accuracy.
Measure the narrowest point of the torso (above belly button for many).
Measure around the hip bones (upper hip), where low-rise lingerie may sit.
Measure around the fullest part of hips and buttocks with feet together.
Shoulder (where strap sits) down through crotch and back up for bodysuits/teddies.
Measure around the fullest part of the thigh for stockings/garters.
Bra Sizing (Band + Cup) — The Core System
1) Find Your Band Size (US/UK Method)
Use your snug underbust measurement. Many brands run small/firm or stretchy, so expect small variations.
- If you measure in inches: round snug underbust to the nearest whole number, then choose the closest even band size (28, 30, 32, 34, 36, 38, 40, 42, 44, 46).
- If you measure in cm: convert to inches (cm ÷ 2.54) or use EU band sizing below.
Note: Some older systems add 4–5 inches to underbust. Many modern brands do not. This guide follows the modern snug-underbust approach.
2) Find Your Cup Size (US/UK Starting Point)
Cup size is based on the difference between full bust and band size (in inches). This is a starting point; shape matters.
| Difference (in) | US Cup | UK Cup | Common Notes |
|---|---|---|---|
| 1 | A | A | Light volume |
| 2 | B | B | Moderate volume |
| 3 | C | C | Fuller volume |
| 4 | D | D | Full bust |
| 5 | DD / E | DD | US often uses DD; UK continues with DD |
| 6 | DDD / F | E | US and UK letters diverge here |
| 7 | G | F | Brand variation increases |
| 8 | H | FF | UK has double letters (FF) |
| 9 | I | G | US I is not universal |
| 10 | J | GG | UK GG appears |
| 11 | K | H | Specialty sizing recommended |
| 12 | L | HH | Extended sizes vary by brand |
International Bra Size Conversions
How conversion works (simple)
Band: US/UK bands use inches (30, 32, 34...). EU bands use centimeters (65, 70, 75...).
Cups: Cup letters differ across regions, especially after D/DD. Always check brand charts when possible.
| US/UK Band | EU Band | FR/ES Band | IT Band | AU/NZ Band |
|---|---|---|---|---|
| 28 | 60 | 75 | 0 | 6 |
| 30 | 65 | 80 | 1 | 8 |
| 32 | 70 | 85 | 2 | 10 |
| 34 | 75 | 90 | 3 | 12 |
| 36 | 80 | 95 | 4 | 14 |
| 38 | 85 | 100 | 5 | 16 |
| 40 | 90 | 105 | 6 | 18 |
| 42 | 95 | 110 | 7 | 20 |
| 44 | 100 | 115 | 8 | 22 |
| 46 | 105 | 120 | 9 | 24 |
Sister Sizes (How to Fix Fit Fast)
What are sister sizes?
If the band feels too tight, go up one band size and down one cup letter (keeping cup volume similar). If the band feels too loose, go down one band size and up one cup letter.
| Too Tight Band | Try | Too Loose Band | Try |
|---|---|---|---|
| 32D | 34C | 34C | 32D |
| 34DD | 36D | 36D | 34DD |
| 36C | 38B | 38B | 36C |
| 30F | 32E | 32E | 30F |
All Bra Types & How They Should Fit
T-Shirt Bra
Purpose: Smooth, invisible under clothing.
Fit check: Cups lie flat, no gaping at top, band level, center gore tacks (in underwire styles).
Balconette / Demi
Purpose: Lift + open neckline.
Fit check: Slightly more top exposure; if you spill out, go up a cup or choose fuller coverage.
Plunge Bra
Purpose: Deep neckline; close-set bust friendly.
Fit check: No spillage at center; straps stable; band anchored.
Full-Coverage Bra
Purpose: Maximum containment.
Fit check: No side spillage; cups fully encase tissue; comfortable under arms.
Underwire Bra
Purpose: Strong structure + lift.
Fit check: Wire sits on ribcage, not breast tissue. If wire rests on tissue, cup is too small or wrong shape.
Wireless / Soft Cup
Purpose: Comfort, light support.
Fit check: Band does not roll; bust is centered; no excessive compression unless intended.
Bralette
Purpose: Light support and comfort (lace/knit).
Fit check: Band sits flat, bust not spilling at edges. For larger busts, consider “bra-sized bralettes.”
Push-Up Bra
Purpose: Lift + enhanced cleavage.
Fit check: No quad-boob; if spillage occurs, go up a cup and/or reduce padding level.
Minimizer Bra
Purpose: Distributes tissue for a smoother profile.
Fit check: Should not flatten painfully; straps not overloaded; band firm.
Strapless Bra
Purpose: No straps, strong band grip.
Fit check: Band must be firm. Many need 1 band size smaller. Cup should not crease or slide down.
Convertible / Multiway
Purpose: Multiple strap configurations.
Fit check: Same as standard bra; ensure strap attachments do not distort cups.
Longline Bra
Purpose: Extended band for smoothing and stability.
Fit check: Bottom edge does not roll; snug around waist/ribs depending on length.
Sports Bra (Compression vs Encapsulation)
Purpose: Movement control.
Fit check: For high impact, prefer encapsulation (separate cups). No bouncing, no chafing, band firm.
Maternity & Nursing Bras
Purpose: Comfort + easy access, size fluctuation support.
Fit check: Soft support, no pinching. Choose adjustable bands and stretch cups.
Panty / Underwear Sizing (All Types)
Measure Hips First
Panties are primarily sized by full hip. Waist matters more for high-waist silhouettes. If you are between sizes: size up for comfort (especially lace or non-stretch mesh).
| Size | US Numeric | Waist (in) | Hips (in) | Waist (cm) | Hips (cm) |
|---|---|---|---|---|---|
| XS | 0-2 | 24-25 | 34-35 | 61-64 | 86-89 |
| S | 4-6 | 26-27 | 36-37 | 66-69 | 91-94 |
| M | 8-10 | 28-29 | 38-39 | 71-74 | 97-99 |
| L | 12-14 | 30-31 | 40-41 | 76-79 | 102-104 |
| XL | 16-18 | 32-34 | 42-44 | 81-86 | 107-112 |
| XXL | 20-22 | 35-37 | 45-47 | 89-94 | 114-119 |
| 3XL | 24-26 | 38-41 | 48-51 | 97-104 | 122-130 |
All Panty Types & Fit Notes
Bikini
Fit: Sits on hips, moderate coverage. Should not cut into hip.
Hipster
Fit: Lower rise, wider sides. If it rolls, size up or choose higher rise.
Brief
Fit: Full coverage, higher rise. Good for comfort and smoothing.
High-Waist / Control Brief
Fit: Waist-driven. Should feel secure but never restrict breathing.
Thongs / G-Strings
Fit: Hip measurement is key. If digging, size up and avoid rigid lace edges.
Cheeky / Brazilian
Fit: Partial back coverage. If it rides up too much, size up or choose a different cut.
Boyshort
Fit: Wider leg opening. Ensure leg elastic does not pinch thighs.
French Cut
Fit: Higher leg openings, elongates legs. Check hip fit to prevent shifting.
Bodysuits, Teddies, Catsuits, Rompers (One-Piece Lingerie)
The Key Measurement: Torso Length
One-piece lingerie fit depends heavily on torso length. If you have a long torso, size up (or choose “tall” options). If you are petite in torso, you may need to size down to avoid wrinkling or loose crotch.
| Size | Bust (in) | Waist (in) | Hips (in) | Torso (in) |
|---|---|---|---|---|
| XS | 31-33 | 24-26 | 34-36 | 56-58 |
| S | 33-35 | 26-28 | 36-38 | 58-60 |
| M | 35-37 | 28-30 | 38-40 | 60-62 |
| L | 37-40 | 30-33 | 40-43 | 62-65 |
| XL | 40-43 | 33-36 | 43-46 | 65-68 |
| XXL | 43-46 | 36-39 | 46-49 | 68-71 |
Bodysuit
Fit check: Crotch closes comfortably, no pulling at shoulders, bust contained, no excessive wrinkling at waist.
Teddy
Fit check: Similar to bodysuit but often lighter, more flexible. Watch the bust fit first.
Catsuit / Full Body Lingerie
Fit check: Prioritize stretch. If between sizes, size up to avoid seam stress and tearing.
Corsets, Bustiers, Basques (Structured Lingerie)
Important: Corsetry sizing is NOT the same as clothing sizing
True corsets are sized by your waist measurement and intended reduction. If you want comfort, choose minimal reduction. If you want shaping, choose moderate reduction and lace responsibly.
Corset Sizing Rule (Practical)
- Fashion corset (light shaping): choose corset waist ~2 inches smaller than natural waist.
- Waist training (advanced): often 4–6 inches smaller, but requires experience and safe practice.
- Bust and hip spring: ensure the corset accommodates bust/hips; otherwise it will pinch or gap.
If a corset has no waist tape and is mostly elastic, treat it as shapewear, not true corsetry.
| Natural Waist (in) | Suggested Corset Waist (in) | Light Shaping | Moderate Shaping |
|---|---|---|---|
| 24 | 22 | -2 | -3 to -4 |
| 26 | 24 | -2 | -3 to -4 |
| 28 | 26 | -2 | -3 to -4 |
| 30 | 28 | -2 | -3 to -4 |
| 32 | 30 | -2 | -3 to -4 |
| 34 | 32 | -2 | -3 to -4 |
| 36 | 34 | -2 | -3 to -4 |
| 38 | 36 | -2 | -3 to -4 |
| 40 | 38 | -2 | -3 to -4 |
Bustier
Fit: Bra-like top with shaping. Choose by bust + waist; if it slides down, band/waist is too loose.
Basque
Fit: Longer than bustier, often with garter attachments. Check waist and hip fit plus torso length.
Shapewear Sizing (All Types)
How shapewear should feel
Shapewear should feel firm and supportive, not painful. If it rolls down, you are either in the wrong size, the wrong rise, or the compression is too high for your torso shape.
- Light smoothing: choose true size.
- Firm shaping: choose true size unless brand recommends sizing down (many do not).
- If you size down and it rolls: go back to true size and choose higher rise or different cut.
| Type | Key Measurement | Best For | Common Fit Issue |
|---|---|---|---|
| High-Waist Brief Shaper | Waist + Hips | Tummy smoothing | Rolling at waist |
| Mid-Thigh Short | Hips + Thigh | Thigh smoothing | Leg band digging |
| Bodysuit Shaper | Bust + Torso + Hips | All-over shaping | Shoulder pull |
| Waist Cincher | Waist | Waist definition | Rib pressure |
| Slip Shaper | Bust + Hips | Smooth under dresses | Riding up |
| Thong Shaper | Waist + Hips | No VPL | Discomfort if too small |
Slips, Chemises, Babydolls, Nightgowns, Robes
How to size sleep lingerie
Prioritize bust and hip measurements plus desired drape. If you want a relaxed, floaty fit, size up. If you want a fitted silhouette, choose true size and verify stretch.
| Size | Bust (in) | Waist (in) | Hips (in) | Typical Fit |
|---|---|---|---|---|
| XS | 31-33 | 24-26 | 34-36 | Fitted |
| S | 33-35 | 26-28 | 36-38 | Fitted/Classic |
| M | 35-37 | 28-30 | 38-40 | Classic |
| L | 37-40 | 30-33 | 40-43 | Relaxed |
| XL | 40-43 | 33-36 | 43-46 | Relaxed |
| XXL | 43-46 | 36-39 | 46-49 | Roomy |
Slip (Full Slip / Half Slip)
Fit: Smooth under dresses/skirts. Choose by hips; for full slip also check bust.
Chemise
Fit: Light, slightly fitted. If bust is full, size by bust first.
Babydoll
Fit: Fitted bust, loose belly/hip drape. Prioritize bust; go up if band is tight.
Robe
Fit: Flexible sizing; prioritize shoulder and hip if it wraps tightly.
Garter Belts, Stockings, Thigh-Highs, Hosiery
Key measurements
- Garter belt: waist (or high hip if it sits lower).
- Thigh-high stockings: thigh circumference + leg length desired.
- Full tights: height + weight + hip (brand dependent).
| Item | Primary Sizing | Secondary Check | Fit Tip |
|---|---|---|---|
| Garter Belt | Waist / High Hip | Torso length | Should sit flat; avoid rolling |
| Thigh-High Stockings | Thigh circumference | Height | If slipping, size down or use garters |
| Hold-Up Stockings | Thigh circumference | Skin sensitivity | Silicone bands should not pinch |
| Tights | Height + Weight | Hip | If seams twist, size up |
| Fishnet Hosiery | Height + Hip | Stretch level | Very stretchy; avoid sizing down |
| Suspender Straps | Adjustable | Clip strength | Clips should not pop off |
Complete Lingerie Set Sizing (Bra + Panty + Garters)
How to buy a set correctly
- Buy the bra by band + cup (not by S/M/L if possible).
- Buy the panty by hip.
- If the set is sold in S/M/L only, use your hip size for panties and your underbust for the top; choose the size that fits both best.
- For garters, choose by waist/high hip.
Plus Size, Petite, and Hard-to-Fit Bodies
Plus Size Lingerie
Key: Look for wider bands, stronger mesh, and supportive cup construction (side panels, power mesh, wider straps).
Common fix: If cup fits but band rolls, try a longer band style (longline) or firmer fabric.
Petite Lingerie
Key: Shorter torso options and smaller band sizes. For bodysuits, torso length is everything.
Common fix: If straps slide, shorten straps or choose racerback/convertible styles.
Long Torso Lingerie
Key: Size up in bodysuits or select “tall” lines. Look for adjustable crotch closures if available.
Fit Troubleshooting (Zero-Guess Fixes)
Bra Problems
- Band rides up: band too large → size down band, size up cup (sister size).
- Spillage/quad-boob: cup too small → size up cup (or try fuller coverage).
- Cup gaping: cup too large or wrong shape → size down cup or try different style (plunge/demi).
- Underwire pokes: wrong shape or size → check wire on ribcage, adjust cup size/brand.
- Straps falling: band too loose, straps too wide-set → tighten straps, try racerback/convertible, or size down band.
Panty Problems
- Digging at hips: size up, choose softer edges, avoid tight elastic.
- Rolling at waist: rise too high/low for torso or too small → choose correct rise or size up.
- Riding up: leg opening too small or cut not right → size up or change cut (brief/hipster).
One-Piece Problems
- Pulling on shoulders: torso too short → size up or choose tall length.
- Loose crotch/wrinkles: torso too long → size down or choose petite length.
- Bust not contained: choose bra-sized bodysuits or size up and tailor straps.
Fabric & Stretch: How It Changes Size Choice
Quick fabric behavior guide
- Rigid satin (low stretch): size by the largest measurement (often hips or bust).
- Lace (medium stretch): true size if comfortable; size up if lace edge is rigid.
- Power mesh (firm): true size for support; size up if between sizes.
- Elastic strappy styles: adjustable, but do not size down too much (strap digging).
- Silk (delicate): choose comfort and avoid tight strain at seams.
Confidence Starts With the Right Fit
Use your measurements, match each category to its key measurement, and remember: different lingerie types are built for different levels of structure. When in doubt, prioritize comfort and stability, and use sister sizing to fine-tune bras quickly.
If you want, paste your measurements (underbust, full bust, waist, hips, torso length, height) and I will tell you the exact sizes to list on Farnelli for each lingerie category.