Lucky Brand to Madewell jeans size

The short answer

Lucky Brand 0 is Madewell 24 or 25 by the two brands' own charts.

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

Every Lucky Brand size read across to Madewell. US numeric sizes on the left, Waist size on the right.
Lucky Brand	Lucky Brand builds it for	Madewell, by chart	Same label	Madewell builds it for	Madewell also prints
0	waist 25.5 in, hip 36 in	24 or 25	not published	waist 25 in, hip 35 in	not published
2	waist 26.5 in, hip 37 in	25 or 26	26	waist 26 in, hip 36 in	not published
4	waist 27.5 in, hip 38 in	26 or 27	27	waist 27 in, hip 37 in	not published
6	waist 28.5 in, hip 39 in	27 or 28	28	waist 28 in, hip 38 in	not published
8	waist 29.5 in, hip 40 in	28 or 29	29	waist 29 in, hip 39 in	not published
10	waist 30.5 in, hip 41 in	29	30	waist 30.3 in, hip 40.3 in	not published

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

Lucky Brand size guide, read on 2026-09-18.
Madewell size guide, read on 2026-09-17. Madewell on TrueToSize

Madewell to Lucky Brand