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Lorna Jane to Spanx leggings size

The short answer

Lorna Jane XXS is Spanx XS by the two brands' own charts. 5 of 7 Lorna Jane sizes land on a different label at Spanx.

Both brands publish the body waist each size is cut for, so every row matches a waist, not a tag.

Every Lorna Jane size read across to Spanx. Letter sizes on the left, Letter on the right.
Lorna JaneLorna Jane builds it forSpanx, by chartSame labelSpanx builds it forSpanx also prints
XXSwaist 25.6 in, hip 31.5 inXSnot publishedwaist 25 to 27 in, hip 34 to 36 inUS numeric 0-2
XSwaist 27.6 in, hip 35.4 inSXSwaist 27 to 29 in, hip 36 to 38 inUS numeric 4-6
Swaist 29.5 in, hip 39.4 inMSwaist 29 to 31 in, hip 38 to 40 inUS numeric 8-10
Mwaist 31.5 in, hip 43.3 inLMwaist 31 to 33.5 in, hip 40 to 42.5 inUS numeric 12-14
Lwaist 33.5 in, hip 47.2 inLLwaist 31 to 33.5 in, hip 40 to 42.5 inUS numeric 12-14
XLwaist 35.4 in, hip 51.2 inXLXLwaist 33.5 to 36 in, hip 42.5 to 45 inUS numeric 16
XXLwaist 37.4 in, hip 55.1 in1Xnot publishedwaist 36 to 39 in, hip 45 to 48 inUS numeric 18-20
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. People who own both brands describe a fit, and their answer ranks above this table once five of them stand behind it. Pick your size in the converter to see whether there are enough yet.

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Sources

Spanx to Lorna Jane