Lorna Jane to SET Active leggings size

The short answer

Lorna Jane XXS is SET Active S by the two brands' own charts. 4 of 7 Lorna Jane sizes land on a different label at SET Active.

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

On 1 sizes the charts land two or more sizes from the same label. Brands do not measure the body the same way, so on those rows treat the chart answer and the same label as the two ends of a range.

Every Lorna Jane size read across to SET Active. Letter sizes on the left, Letter on the right.
Lorna Jane	Lorna Jane builds it for	SET Active, by chart	Same label	SET Active builds it for	SET Active also prints
XXS	waist 25.6 in, hip 31.5 in	S	not published	waist 25 to 27 in	US numeric 4-6
XS	waist 27.6 in, hip 35.4 in	M or S	XS	waist 28 to 30 in	US numeric 8-10
S	waist 29.5 in, hip 39.4 in	M	S	waist 28 to 30 in	US numeric 8-10
M	waist 31.5 in, hip 43.3 in	L	M	waist 31 to 33 in	US numeric 12-14
L	waist 33.5 in, hip 47.2 in	L or XL	L	waist 31 to 33 in	US numeric 12-14
XL	waist 35.4 in, hip 51.2 in	XL	XL	waist 34 to 36 in	US numeric 16-18
XXL	waist 37.4 in, hip 55.1 in	XXL	XXL	waist 37 to 40 in	US numeric 20-22

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.

Open in the converter Add an item you own

Sources

Lorna Jane size guide, read on 2026-09-18.
SET Active size guide, read on 2026-09-18.

SET Active to Lorna Jane