Wacoal to Le Mystere bra size

The short answer

Wacoal 34DDD is Le Mystere 34F by the two brands' own charts. 1 of 8 Wacoal sizes land on a different label at Le Mystere.

Cups are counted along each brand's own letter order, and the band is carried across unchanged.

Every Wacoal size read across to Le Mystere. US sizes on the left, US on the right.
Wacoal	Le Mystere, by chart	Same label	Le Mystere also prints
34A	34A	not published	UK A · EU A · FR A · AU A
34B	34B	not published	UK B · EU B · FR B · AU B
34C	34C	not published	UK C · EU C · FR C · AU C
34D	34D	not published	UK D · EU D · FR D · AU D
34DD	34E/DD	not published	UK DD · EU E · FR E · AU DD
34DDD	34F	not published	UK E · EU F · FR F · AU E
34G	34G	not published	UK F · EU G · FR G · AU F
34H	34H	not published	UK FF · EU H · FR H · AU FF
34I	not made	not published	not published
34J	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 Le Mystere 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.

Open in the converter Add an item you own

Sources

Wacoal size guide, read on 2026-09-17. Wacoal on TrueToSize
Le Mystere size guide, read on 2026-09-18.

Le Mystere to Wacoal