Le Mystere to True & Co bra size

The short answer

Le Mystere 34C is True & Co M by the two brands' own charts.

The target brand lists the bra sizes each of its sizes covers; rows are read from that list.

Every Le Mystere size read across to True & Co. US sizes on the left, Brand's own on the right.
Le Mystere	True & Co, by chart	Same label	True & Co also prints
34A	S	not published	not published
34B	S	not published	not published
34C	M	not published	not published
34D	M	not published	not published
34F	L	not published	not published
34G	not made	not published	not published
34H	not made	not published	not published

Neither chart publishes the body each size is built for, so the rows line up the labels. Tinted rows change label or sit between two sizes. 2 sizes have no counterpart on the True & Co chart. 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

Le Mystere size guide, read on 2026-09-18.
True & Co size guide, read on 2026-09-18. True & Co on TrueToSize

True & Co to Le Mystere