Bra size charts by brand, read side by side

Six brands, each read from its own size chart or its own calculator on 26 September 2026. Which country's letters they print, how they turn a tape measurement into a band, and where their charts part company with each other.

No brand paid for a mention, and there are no shop links on this page. We quote what each chart shows and say where a chart disagrees with others; we don't claim that any brand "runs small" or "runs big".

Same tape, four answers

We typed the same tape measurements into Wacoal's and ThirdLove's online calculators and read SKIMS's published chart. The band padding explains most of the spread.

One body, several labelsUnderbust and bust in inches. Bra Atlas in UK letters (measured band); the brands in their own US letters. A dash: not run, no size returned, or no single answer on the chart.
TapeBra AtlasWacoal calculatorThirdLove calculatorSKIMS chart
29 / 3330C/D32A––
30 / 3430D–32B½34A
32 / 3532C–34AA–
33 / 3734C/D36A36A–
34 / 3834D36B36A38A
36 / 4136DD38C38A–
38 / 4438E40Dnot carried–

Our read: Wacoal's five answers all follow one rule, underbust + 2 in (+3 if odd) for the band and one cup per inch above it. SKIMS's chart adds 4 in to the underband. Both give a bigger band and a smaller cup than the measured-band method, the pattern White and Scurr (2012) found with the traditional +4 method. Neither is "wrong" for its own bras: a brand sizes to its own cut. It means a size from one brand's tool does not carry over to another's. Runs recorded in a browser; raw outputs in our repository's docs/sources/brands folder.

Cup letters after DD

Every chart agrees up to DD. The highlighted letters are where each brand's ladder leaves the shared run.

Victoria's Secret (US)

  1. AA
  2. A
  3. B
  4. C
  5. D
  6. DD
  7. DDD

Wacoal (US)

  1. AA
  2. A
  3. B
  4. C
  5. D
  6. DD
  7. DDD
  8. G
  9. H
  10. I
  11. J
  12. K
  13. L
  14. M
  15. N
  16. O

SKIMS (US)

  1. AA
  2. A
  3. B
  4. C
  5. D
  6. DD
  7. F
  8. G
  9. H

Marks & Spencer (UK)

  1. AA
  2. A
  3. B
  4. C
  5. D
  6. DD
  7. E
  8. F
  9. G
  10. GG
  11. H
  12. J
  13. K

Freya (UK)

  1. B
  2. C
  3. D
  4. DD
  5. E
  6. F
  7. FF
  8. G
  9. GG
  10. H
  11. HH
  12. J
  13. JJ
  14. K

ThirdLove's chart is an image we could not read as text; its guide says DD is the same as E and DDD the same as F. The international chart has the full ladders by country.

Brand by brand

Ordered by how often people search for each brand's size chart in the US (Google Ads data, 26 September 2026).

Victoria's Secret

Labels
US cup letters
Range
30 to 44 bands, AA to DDD cups on its international chart
Band
Its UK measuring page: snug underbust, rounded to the nearest even number. No inches added.
Searches
"victoria's secret bra size chart": 3,600 a month (US)

What its chart shows

Victoria's Secret sells US sizes. Its international chart puts a US 34DDD at UK 34E, EU 75F, France 90F and Australia 12E, and a US 34DD at UK 34DD and EU 75E. Every row of that chart, bands 30 to 44 and cups AA to DDD, matches our converter exactly.

The E and F on its labels

Its bralette charts print the cup rows as "DD (E)" and "DDD (F)". So a VS "E" is a US DD and a VS "F" is a US DDD: a UK E, not a UK F.

What we could not check

Its US online calculator did not accept scripted input when we tried it, so we have no recorded answers from it. The band rule above is from its UK page.

Convert a Victoria's Secret size like 34DDD · Victoria's Secret's own page

ThirdLove

Labels
US cup letters
Range
32 to 44 bands, AA to H cups, plus half cups (for example 32B½)
Band
In our runs its calculator put the band 2 in above an even underbust and 3 in above an odd one.
Searches
"thirdlove bra size chart": 2,400 a month (US)

What its calculator printed

We gave its bra size calculator six tape measurements. 30/34 in came back 32B½, 32/35 came back 34AA, 33/37 came back 36A, 34/38 came back 36A and 36/41 came back 38A; 38/44 returned "we don't currently carry your size". Our measured-band engine gives 30D, 32C, 34C/D, 34D, 36DD and 38E for the same pairs.

Its letters

ThirdLove's own measuring guide says a DD is the same as an E and a DDD is the same as an F. Its half cups sit between two letters, so a 34C½ has no exact label at another brand: try the letter above and below.

Reading it

The padded band is the older +4 idea in a milder form (+2 or +3). Its cups did not follow one subtraction rule we could reproduce from six pairs, so we publish what it printed and nothing more.

Full ThirdLove size chart, converted · Convert a ThirdLove size like 34DDD · ThirdLove's own page

Wacoal

Labels
US cup letters
Range
US labels; its chart pairs US and UK cups from AA to O
Band
In our runs its calculator put the band 2 in above an even underbust and 3 in above an odd one, then took one cup per inch of difference.
Searches
"wacoal bra size chart": 1,900 a month (US)

What its calculator printed

Five of our tape measurements returned a size: 29/33 in gave 32A, 33/37 gave 36A, 34/38 gave 36B, 36/41 gave 38C and 38/44 gave 40D. Every one fits the same rule: band = underbust + 2 (or + 3 if odd), cup = bust minus that band, one letter per inch. Three other pairs (30/34, 32/35, 28/30) returned "Your overbust measurement should be larger than your underbust" in two separate runs.

What its chart shows

Wacoal America's size chart page prints the US and UK cup ladders side by side: US DDD = UK E, US G = UK F, US H = UK FF, up to US O = UK K. That is exactly the ladder our converter uses.

Full Wacoal size chart, converted · Convert a Wacoal size like 34DDD · Wacoal's own page

SKIMS

Labels
US cup letters
Range
30AA to 46H for cup-sized styles; letter sizes XXS to 5X for wireless
Band
Its chart puts each underband 4 in higher: a 26 in underband sits in the 30 band, 28 in the 32 band, 34 in the 38 band.
Searches
"skims bra size chart": 260 a month (US)

What its chart shows

SKIMS sizes cup-sized bras from an underband and an overbust. On its chart a 30 in underband with a 34 in overbust reads 34A, and 34 in with 38 in reads 38A. For the same two bodies our measured-band engine gives 30D and 34D.

The missing DDD

Its sizes run DD, F, G, H with no DDD or E. Its own cup table says US DDD = UK E and then pairs US F with UK F, US G with UK G and US H with EU K. That differs from Wacoal's and Freya's charts, where UK F = US G. With SKIMS, follow the SKIMS chart rather than a general converter.

Convert a SKIMS size like 34F · SKIMS's own page

Marks & Spencer

Labels
UK cup letters
Range
UK 28AA to 46K on its conversion table
Band
M&S calls a tape measurement "a rough starting point" and recommends a fitting with its lingerie stylists.
Searches
"marks & spencer bra size chart": 10 a month (US)

Its letters

The M&S conversion table runs DD, E, F, G, GG, H, J, K: no FF, HH or JJ, which most UK specialists (Freya, for one) use.

Its US column

On the M&S US size guide, bands 30 and 34 to 46 list the US size one cup letter below the UK size (UK 34C = US 34B, UK 36DD = US 36D), while bands 28 and 32 keep the same letters (UK 32C = US 32C). Wacoal, Freya and Victoria's Secret all print UK 34C = US 34C. If you shop M&S from the US, compare with the UK label.

Its fit advice

M&S: if the band rides up, you might need a smaller band size; if the straps are doing all the work, the band may be too big; spilling out means a bigger cup, gaping or creasing a smaller one; a centre that lifts away means a bigger cup. Its sister-size example is the same as ours: 34C holds the same cup volume as 32D and 36B.

Convert a Marks & Spencer size like 34E · Marks & Spencer's own page

Freya

Labels
UK cup letters
Range
Bands 28 to 44 and cups B to K on its size chart; it states B to O across its ranges
Band
Its band table: UK 34 = EU 75 = France 90 = Australia 12 = US 34 = Japan 75.
Searches
"freya bra size chart": 170 a month (US)

What its chart shows

Freya prints one row per country. UK E is EU F and US DDD; UK F is EU G and US G; UK FF is EU H and US H; Japan runs one letter ahead of the EU. Its UK, EU, France, US and Japan rows match our converter cell for cell (our Japanese column stops at I).

Where it disagrees with us

Freya's Australian row keeps the UK letters, FF and GG included. Berlei's Australian chart skips FF and GG, and our converter follows Berlei, so for a UK FF we print AU G where Freya prints AU FF. Buying Freya in Australia, go by Freya's label.

Convert a Freya size like 34FF · Freya's own page

Not yet on this page: Bravissimo (its size guide address returned "page not found" on 26 September 2026); Panache (its size tables sit behind product pages we could not read as text). We add a brand only when we can read its own chart.

Using a brand's chart

  • Start from your measured size. The calculator gives it, with the +4 result beside it so you can see how far a padded-band brand may move you.
  • Check the letters. A US brand's DDD is a UK E. Victoria's Secret also prints it as "F", SKIMS skips it, and ThirdLove says DDD equals F. Use the converter before you order across countries.
  • Band doesn't fit, cups do? Move to a sister size, one band and one letter the opposite way.
  • Already own one that feels wrong? The fit check turns what you notice into the next size.

Sources

Each source was opened and checked on the date shown, or on 25 September 2026. Where sources disagree, the page says so instead of picking one silently.

  1. Victoria's Secret Customer Care, "Size & Fit: International Size Chart (Outside the U.S.)": US sizes sold; bands 30 to 44, cups AA to DDD; US DDD = UK E (opened 26 September 2026)
  2. Victoria's Secret Customer Care, "Size & Fit: Bras & Bralettes": cup rows printed as "DD (E)" and "DDD (F)" (opened 26 September 2026)
  3. Victoria's Secret UK, "Measure Your Bra Size": band = snug underbust rounded to the nearest even number; fit fixes; sister table (opened 26 September 2026)
  4. ThirdLove, "Bra Size Calculator & Chart": bands 32 to 44, cups AA to H with half cups; calculator run with 6 measurement pairs (opened 26 September 2026)
  5. ThirdLove, "How To Measure Your Bra Size At Home": DD = E and DDD = F; half-cup sizes; do not round (opened 26 September 2026)
  6. Wacoal America, "Size Charts": US and UK cup ladders side by side (opened 26 September 2026)
  7. Wacoal America, "Bra Fit Calculator": measurements in eighths of an inch; calculator run with 8 measurement pairs (opened 26 September 2026)
  8. SKIMS, "Bra Size Guide": underband and overbust chart, sizes 30AA to 46H, US/UK/EU/AU cup table (opened 26 September 2026)
  9. Marks & Spencer, "How to Measure Bra Size": fit checks; sister sizing; a tape gives a rough starting point (opened 26 September 2026)
  10. Marks & Spencer US, "Bras size guide": UK, AU/NZ, US/CA, EU and FR conversion table (opened 26 September 2026)
  11. Freya, "International Bra Size Chart & Bra Sizing": band and cup tables in UK, EU, FR, AU/NZ, US and JP (opened 26 September 2026)
  12. White J, Scurr J. Evaluation of professional bra fitting criteria for bra selection and fitting in the UK. Ergonomics 2012;55(6):704-711: 45 women; the traditional method overestimated band and underestimated cup
  13. Berlei Australia, size charts: AU band = underbust row, cups A to H with no FF or GG