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Convert / Women's clothing

Athleta to Reiss clothing size

The short answer

Athleta M is Reiss 12 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 Reiss. Letter sizes on the left, UK on the right.
AthletaAthleta builds it forReiss, by chartSame labelReiss builds it forReiss also prints
XXSbust 31.5 in, waist 24.3 in, hip 34 in4 or 6not publishedbust 31 in, waist 24 in, hip 34 inUS 0 · Letter XS · FR 34 · IT 36 · AU 4 · EU (as printed) 32
XSbust 32.5 to 33.5 in, waist 25.3 to 26.3 in, hip 35 to 36 in8not publishedbust 33 in, waist 26 in, hip 36 inUS 4 · Letter S · FR 38 · IT 40 · AU 8 · EU (as printed) 36
Sbust 34.5 to 35.5 in, waist 27.3 to 28.3 in, hip 37 to 38 in10not publishedbust 35 in, waist 28 in, hip 38 inUS 6 · Letter S · FR 40 · IT 42 · AU 10 · EU (as printed) 38
Mbust 36.5 to 37.5 in, waist 29.3 to 30.3 in, hip 39 to 40 in12not publishedbust 37 in, waist 30 in, hip 40 inUS 8 · Letter M · FR 42 · IT 44 · AU 12 · EU (as printed) 40
Lbust 39 to 40.5 in, waist 31.8 to 33.3 in, hip 41.5 to 43 in14 or 16not publishedbust 39 in, waist 31.5 in, hip 42 inUS 10 · Letter M · FR 44 · IT 46 · AU 14 · EU (as printed) 42
XLbust 42 in, waist 34.3 in, hip 44.5 in16 or 18not publishedbust 41 in, waist 33.5 in, hip 44 inUS 12 · Letter L · FR 46 · IT 48 · AU 16 · EU (as printed) 44
1Xbust 44.3 to 46.3 in, waist 38 to 40 in, hip 47.3 to 49.3 innot madenot publishednot publishednot published
2Xbust 48.3 to 50.8 in, waist 42 to 44.5 in, hip 51.3 to 53.8 innot madenot publishednot publishednot published
3Xbust 53.3 to 55.8 in, waist 47 to 49.5 in, hip 56.3 to 58.8 innot madenot publishednot publishednot published
Tinted rows change label or sit between two sizes. 3 sizes have no counterpart on the Reiss chart. 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

Reiss to Athleta