Playtex to Le Mystere bra size

The short answer

Playtex 34DDD is Le Mystere 34F by the two brands' own charts. 1 of 6 Playtex 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 Playtex size read across to Le Mystere. US sizes on the left, US on the right.
Playtex	Le Mystere, by chart	Same label	Le Mystere also prints
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

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. 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

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

Le Mystere to Playtex