Berlei to Le Mystere bra size

The short answer

Berlei 12DD is Le Mystere 34E/DD by the two brands' own charts.

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

Every Berlei size read across to Le Mystere. AU sizes on the left, US on the right.
Berlei	Berlei builds it for	Le Mystere, by chart	Same label	Le Mystere builds it for	Le Mystere also prints
12A	not published	34A	not published	not published	UK A · EU A · FR A · AU A
12B	not published	34B	not published	not published	UK B · EU B · FR B · AU B
12C	not published	34C	not published	not published	UK C · EU C · FR C · AU C
12D	not published	34D	not published	not published	UK D · EU D · FR D · AU D
12DD	not published	34E/DD	not published	not published	UK DD · EU E · FR E · AU DD
12E	not published	34F	not published	not published	UK E · EU F · FR F · AU E
12F	not published	34G	not published	not published	UK F · EU G · FR G · AU F
12G	not published	34H	not published	not published	UK FF · EU H · FR H · AU FF
12H	not published	not made	not published	not published	not published

Tinted rows change label or sit between two sizes. 1 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

Berlei size guide, read on 2026-09-18.
Le Mystere size guide, read on 2026-09-18.

Le Mystere to Berlei