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Convert / Women's clothing

Athleta to J.Crew clothing size

The short answer

Athleta XXS is J.Crew 000 or 00 by the two brands' own charts.

Both brands publish the body bust each size is cut for, so every row matches a bust, not a letter or a number.

Every Athleta size read across to J.Crew. Letter sizes on the left, US on the right.
AthletaAthleta builds it forJ.Crew, by chartSame labelJ.Crew builds it forJ.Crew also prints
XXSbust 31.5 in, waist 24.3 in, hip 34 in000 or 00000bust 31 in, waist 23 inLetter XXXS · UK 0 · DE 24 · FR 28 · IT 32 · AU 0 · JP 1
XSbust 32.5 to 33.5 in, waist 25.3 to 26.3 in, hip 35 to 36 in0not publishedbust 33 in, waist 25 inLetter XS · UK 4 · DE 28 · FR 32 · IT 36 · AU 4 · JP 3
Sbust 34.5 to 35.5 in, waist 27.3 to 28.3 in, hip 37 to 38 in4not publishedbust 35 in, waist 27 inLetter S · UK 8 · DE 34 · FR 36 · IT 40 · AU 8 · JP 7
Mbust 36.5 to 37.5 in, waist 29.3 to 30.3 in, hip 39 to 40 in8not publishedbust 37 in, waist 29 inLetter M · UK 12 · DE 36 · FR 40 · IT 44 · AU 12 · JP 11
Lbust 39 to 40.5 in, waist 31.8 to 33.3 in, hip 41.5 to 43 in12not publishedbust 39.5 in, waist 31.5 inLetter L · UK 16 · DE 40 · FR 44 · IT 48 · AU 16 · JP 15
XLbust 42 in, waist 34.3 in, hip 44.5 in14 or 16not publishedbust 41 in, waist 33 inLetter L · UK 18 · DE 42 · FR 46 · IT 50 · AU 18 · JP 17
1Xbust 44.3 to 46.3 in, waist 38 to 40 in, hip 47.3 to 49.3 in18not publishedbust 46 in, waist 38 inLetter XXL / 1X · UK 22 · DE 46 · FR 50 · IT 54 · AU 22 · JP 21
2Xbust 48.3 to 50.8 in, waist 42 to 44.5 in, hip 51.3 to 53.8 in20 or 22not publishedbust 48.5 in, waist 40.5 inLetter 2X · UK 24 · DE 48 · FR 52 · IT 56 · AU 24 · JP 23
3Xbust 53.3 to 55.8 in, waist 47 to 49.5 in, hip 56.3 to 58.8 in24not publishedbust 53.5 in, waist 45.5 inLetter 3X
Tinted rows change label or sit between two sizes. Read from the two charts only; no formula and no averaging.

What wearers say

Charts describe a garment, not a fit. We do not collect fit reports for this category yet, so this table is the two brands' own claims and nothing more.

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Sources

J.Crew to Athleta