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Convert / Leggings

Spanx to SKIMS leggings size

The short answer

Spanx XL is SKIMS L by the two brands' own charts. 2 of 8 Spanx sizes land on a different label at SKIMS.

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

Every Spanx size read across to SKIMS. Letter sizes on the left, Letter on the right.
SpanxSpanx builds it forSKIMS, by chartSame labelSKIMS builds it forSKIMS also prints
XSwaist 25 to 27 in, hip 34 to 36 inXSXSwaist 24 to 26 in, hip 34 to 36.5 inUS numeric 0-2
Swaist 27 to 29 in, hip 36 to 38 inSSwaist 26.5 to 28.5 in, hip 37 to 39 inUS numeric 4-6
Mwaist 29 to 31 in, hip 38 to 40 inMMwaist 29 to 31 in, hip 39.5 to 41.5 inUS numeric 8-10
Lwaist 31 to 33.5 in, hip 40 to 42.5 inLLwaist 31.5 to 34.5 in, hip 42 to 44 inUS numeric 12-14
XLwaist 33.5 to 36 in, hip 42.5 to 45 inLXLwaist 31.5 to 34.5 in, hip 42 to 44 inUS numeric 12-14
1Xwaist 36 to 39 in, hip 45 to 48 inXLnot publishedwaist 35 to 38 in, hip 44.5 to 47.5 inUS numeric 16
2Xwaist 39 to 42 in, hip 48 to 51 in2X2Xwaist 38.5 to 41.5 in, hip 48 to 51 inUS numeric 18-20
3Xwaist 42 to 45 in, hip 51 to 54 in3X3Xwaist 42 to 45.5 in, hip 51.5 to 55 inUS numeric 22-24
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

SKIMS to Spanx