{
  "title": "BraFinder cross-brand bra sizing offsets",
  "description": "How bra sizing runs at each brand relative to a neutral US reference size. This is the same table the BraFinder size translator runs on — published so assistants, researchers, and tools can translate sizes across brands without guessing.",
  "version": "v1-2026-05-28",
  "brandCount": 33,
  "method": {
    "summary": "Each brand is mapped to a neutral US reference via a band offset and a cup offset. To translate: remove the source brand's offset to get the neutral size, then apply the target brand's offset and sizing system. Full method: https://www.brafinder.com/methodology",
    "signConvention": "positive delta = brand runs LARGE (size down); negative = brand runs SMALL (size up). bandDelta is in band steps (2 in = 1 step); cupDelta is in cup letters.",
    "confidence": "confidence is 0-1 and reflects how well-evidenced the offset is. Current values are v1 rules-derived from published size charts and fit conventions (data_points 0), intended to be corrected by real fit outcomes over time. Treat sub-0.7 values as directional.",
    "sizingSystems": "system is the ladder the brand labels its cups in (US or UK). UK: ...DD, E, F, FF, G, GG...; US: ...DD/E, DDD/F... The translator normalizes between them."
  },
  "license": "CC BY 4.0 — free to use with attribution to BraFinder (https://www.brafinder.com/methodology).",
  "contact": "https://www.brafinder.com/contact",
  "brands": [
    {
      "name": "ThirdLove",
      "system": "US",
      "bandDelta": 0,
      "cupDelta": 0.5,
      "inCatalog": true,
      "confidence": 0.6,
      "note": "Half-cup sizing available; cups run slightly generous.",
      "popularStyles": [
        "24/7 Classic",
        "24/7 Lace Contour"
      ]
    },
    {
      "name": "Wacoal",
      "system": "US",
      "bandDelta": 0,
      "cupDelta": 0,
      "inCatalog": true,
      "confidence": 0.7,
      "note": "True to size; consistent fit across decades.",
      "popularStyles": [
        "Basic Beauty",
        "How Perfect"
      ]
    },
    {
      "name": "Panache",
      "system": "UK",
      "bandDelta": 0,
      "cupDelta": 0,
      "inCatalog": true,
      "confidence": 0.6,
      "note": "UK sizing; true to size, consistent year over year.",
      "popularStyles": [
        "Envy",
        "Jasmine",
        "Tango"
      ]
    },
    {
      "name": "Freya",
      "system": "UK",
      "bandDelta": -0.5,
      "cupDelta": 0,
      "inCatalog": true,
      "confidence": 0.6,
      "note": "UK sizing; bands run snug.",
      "popularStyles": [
        "Deco",
        "Fancies",
        "Active"
      ]
    },
    {
      "name": "Elomi",
      "system": "UK",
      "bandDelta": 0,
      "cupDelta": 0.5,
      "inCatalog": true,
      "confidence": 0.6,
      "note": "UK plus-size full-bust; cups run generous.",
      "popularStyles": [
        "Matilda",
        "Morgan",
        "Cate"
      ]
    },
    {
      "name": "Glamorise",
      "system": "US",
      "bandDelta": 0,
      "cupDelta": 0,
      "inCatalog": true,
      "confidence": 0.55,
      "note": "US full-figure; true to size.",
      "popularStyles": [
        "MagicLift",
        "Sport"
      ]
    },
    {
      "name": "SHEFIT",
      "system": "US",
      "bandDelta": 0,
      "cupDelta": 0,
      "inCatalog": true,
      "confidence": 0.35,
      "note": "Adjustable XS-6Luxe sizing rather than standard band/cup; size by the brand chart.",
      "popularStyles": [
        "Ultimate Sports Bra",
        "Flex"
      ]
    },
    {
      "name": "b.tempt'd",
      "system": "US",
      "bandDelta": 0,
      "cupDelta": 0,
      "inCatalog": true,
      "confidence": 0.5,
      "note": "Wacoal-family fit DNA; runs true to US sizing, lighter construction.",
      "popularStyles": [
        "Future Foundation",
        "b.wow'd"
      ]
    },
    {
      "name": "Kindred Bravely",
      "system": "US",
      "bandDelta": 0,
      "cupDelta": 0,
      "inCatalog": true,
      "confidence": 0.35,
      "note": "Uses XS-XXL nursing/maternity sizing rather than band/cup; size by the brand chart.",
      "popularStyles": [
        "Simply Sublime",
        "Sublime"
      ]
    },
    {
      "name": "ENELL",
      "system": "US",
      "bandDelta": 0,
      "cupDelta": 0,
      "inCatalog": true,
      "confidence": 0.35,
      "note": "Uses numeric high-impact sizing (00-8) rather than band/cup; size by the brand chart.",
      "popularStyles": [
        "Sport",
        "Lite"
      ]
    },
    {
      "name": "Natori",
      "system": "US",
      "bandDelta": 0,
      "cupDelta": -0.5,
      "inCatalog": false,
      "confidence": 0.4,
      "note": "Cups run small; consider sizing up.",
      "popularStyles": [
        "Feathers",
        "Flora"
      ]
    },
    {
      "name": "Chantelle",
      "system": "EU",
      "bandDelta": 0,
      "cupDelta": -0.5,
      "inCatalog": false,
      "confidence": 0.4,
      "note": "French sizing; cups run small.",
      "popularStyles": [
        "C Magnifique",
        "Norah"
      ]
    },
    {
      "name": "Bali",
      "system": "US",
      "bandDelta": 1,
      "cupDelta": 0,
      "inCatalog": false,
      "confidence": 0.4,
      "note": "Bands run loose; consider sizing down.",
      "popularStyles": [
        "Comfort Revolution",
        "One Smooth U"
      ]
    },
    {
      "name": "Playtex",
      "system": "US",
      "bandDelta": 1,
      "cupDelta": 0,
      "inCatalog": false,
      "confidence": 0.4,
      "note": "Bands run large; size down in band.",
      "popularStyles": [
        "18 Hour",
        "Love My Curves"
      ]
    },
    {
      "name": "Maidenform",
      "system": "US",
      "bandDelta": 0,
      "cupDelta": 0,
      "inCatalog": false,
      "confidence": 0.4,
      "note": "Generally true to size.",
      "popularStyles": [
        "One Fab Fit",
        "Pure Genius"
      ]
    },
    {
      "name": "Vanity Fair",
      "system": "US",
      "bandDelta": 0.5,
      "cupDelta": 0,
      "inCatalog": false,
      "confidence": 0.4,
      "note": "Bands run slightly loose.",
      "popularStyles": [
        "Beauty Back",
        "Illumination"
      ]
    },
    {
      "name": "Calvin Klein",
      "system": "US",
      "bandDelta": -0.5,
      "cupDelta": 0,
      "inCatalog": false,
      "confidence": 0.4,
      "note": "Bands run slightly snug.",
      "popularStyles": [
        "Modern Cotton",
        "Invisibles"
      ]
    },
    {
      "name": "Victoria's Secret",
      "system": "US",
      "bandDelta": 0,
      "cupDelta": -1,
      "inCatalog": false,
      "confidence": 0.4,
      "note": "Cups run very small; size up a full cup.",
      "popularStyles": [
        "Body by Victoria",
        "Very Sexy"
      ]
    },
    {
      "name": "Fantasie",
      "system": "UK",
      "bandDelta": 0,
      "cupDelta": 0,
      "inCatalog": true,
      "confidence": 0.4,
      "note": "UK sizing; consistent fit.",
      "popularStyles": [
        "Rebecca",
        "Smoothing"
      ]
    },
    {
      "name": "Curvy Kate",
      "system": "UK",
      "bandDelta": -0.5,
      "cupDelta": 0,
      "inCatalog": false,
      "confidence": 0.4,
      "note": "UK sizing; bands run firm.",
      "popularStyles": [
        "Daily Dream",
        "Victory"
      ]
    },
    {
      "name": "Gossard",
      "system": "UK",
      "bandDelta": 0,
      "cupDelta": 0,
      "inCatalog": false,
      "confidence": 0.4,
      "note": "UK sizing; classic fit.",
      "popularStyles": [
        "Superboost",
        "Glossies"
      ]
    },
    {
      "name": "Pour Moi",
      "system": "UK",
      "bandDelta": 0,
      "cupDelta": 0,
      "inCatalog": false,
      "confidence": 0.4,
      "note": "UK sizing; budget-friendly.",
      "popularStyles": [
        "Definitions",
        "Contradiction"
      ]
    },
    {
      "name": "Simone Perele",
      "system": "EU",
      "bandDelta": 0,
      "cupDelta": -0.5,
      "inCatalog": false,
      "confidence": 0.4,
      "note": "French luxury; cups run small.",
      "popularStyles": [
        "Saga",
        "Caresse"
      ]
    },
    {
      "name": "PrimaDonna",
      "system": "EU",
      "bandDelta": 0,
      "cupDelta": 0,
      "inCatalog": false,
      "confidence": 0.4,
      "note": "Belgian luxury; true EU sizing.",
      "popularStyles": [
        "Madison",
        "Deauville"
      ]
    },
    {
      "name": "Marie Jo",
      "system": "EU",
      "bandDelta": 0,
      "cupDelta": 0,
      "inCatalog": false,
      "confidence": 0.4,
      "note": "Belgian; consistent fit.",
      "popularStyles": [
        "Tom",
        "Avero"
      ]
    },
    {
      "name": "Triumph",
      "system": "EU",
      "bandDelta": 0.5,
      "cupDelta": 0,
      "inCatalog": false,
      "confidence": 0.4,
      "note": "German; bands slightly generous.",
      "popularStyles": [
        "Amourette",
        "Body Make-Up"
      ]
    },
    {
      "name": "Anita",
      "system": "EU",
      "bandDelta": 0,
      "cupDelta": 0,
      "inCatalog": false,
      "confidence": 0.4,
      "note": "German; strong post-surgery range.",
      "popularStyles": [
        "Rosa Faia",
        "Comfort"
      ]
    },
    {
      "name": "Brooks",
      "system": "US",
      "bandDelta": -0.5,
      "cupDelta": 0,
      "inCatalog": false,
      "confidence": 0.4,
      "note": "Compression sports style; may run snug.",
      "popularStyles": [
        "Dare Crossback",
        "Drive"
      ]
    },
    {
      "name": "Under Armour",
      "system": "US",
      "bandDelta": 0,
      "cupDelta": 0.5,
      "inCatalog": false,
      "confidence": 0.4,
      "note": "Compression generous; XS-XL sizing.",
      "popularStyles": [
        "Infinity",
        "Crossback"
      ]
    },
    {
      "name": "Nike",
      "system": "US",
      "bandDelta": 0,
      "cupDelta": 0.5,
      "inCatalog": false,
      "confidence": 0.4,
      "note": "Generous fit; XS-XL sizing.",
      "popularStyles": [
        "Swoosh",
        "Dri-FIT"
      ]
    },
    {
      "name": "Goddess",
      "system": "UK",
      "bandDelta": 0,
      "cupDelta": 0,
      "inCatalog": false,
      "confidence": 0.4,
      "note": "UK sizing; strong plus-size range.",
      "popularStyles": [
        "Keira",
        "Adelaide"
      ]
    },
    {
      "name": "Cacique",
      "system": "US",
      "bandDelta": 0.5,
      "cupDelta": 0,
      "inCatalog": false,
      "confidence": 0.4,
      "note": "Lane Bryant's brand; bands run generous.",
      "popularStyles": [
        "Balconette",
        "No-Wire"
      ]
    },
    {
      "name": "Torrid",
      "system": "US",
      "bandDelta": 0.5,
      "cupDelta": 0,
      "inCatalog": false,
      "confidence": 0.4,
      "note": "Plus-focused; bands run large.",
      "popularStyles": [
        "Signature Lace",
        "Simply Wire-Free"
      ]
    }
  ]
}