PrimaDonna to Le Mystere bra size

The short answer

PrimaDonna 75F is Le Mystere 34F by the two brands' own charts.

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

Every PrimaDonna size read across to Le Mystere. EU sizes on the left, US on the right.
PrimaDonna	Le Mystere, by chart	Same label	Le Mystere also prints
75B	34B	not published	UK B · EU B · FR B · AU B
75C	34C	not published	UK C · EU C · FR C · AU C
75D	34D	not published	UK D · EU D · FR D · AU D
75E	34E/DD	not published	UK DD · EU E · FR E · AU DD
75F	34F	not published	UK E · EU F · FR F · AU E
75G	34G	not published	UK F · EU G · FR G · AU F
75H	34H	not published	UK FF · EU H · FR H · AU FF
75I	not made	not published	not published
75J	not made	not published	not published
75K	not made	not published	not published
75L	not made	not published	not published
75M	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. 5 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.

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Sources

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

Le Mystere to PrimaDonna