Le Mystere to Playtex bra size

The short answer

Le Mystere 34F is Playtex 34DDD by the two brands' own charts. 1 of 5 Le Mystere sizes land on a different label at Playtex.

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

Every Le Mystere size read across to Playtex. US sizes on the left, US on the right.
Le Mystere	Playtex, by chart	Same label	Playtex also prints
34A	not made	not published	not published
34B	34B	not published	not published
34C	34C	not published	not published
34D	34D	not published	not published
34F	34DDD	not published	not published
34G	34G	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 Playtex 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.
Playtex size guide, read on 2026-09-17. Playtex on TrueToSize

Playtex to Le Mystere