Triumph to Bras N Things bra size

The short answer

Triumph 75E is Bras N Things 12DD by the two brands' own charts.

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

Every Triumph size read across to Bras N Things. EU sizes on the left, AU on the right.
Triumph	Bras N Things, by chart	Same label	Bras N Things also prints
75AA	not made	not published	not published
75A	12A	not published	UK A · US A · EU A · FR A
75B	12B	not published	UK B · US B · EU B · FR B
75C	12C	not published	UK C · US C · EU C · FR C
75D	12D	not published	UK D · US D · EU D · FR D
75E	12DD	not published	UK DD · US DD · EU E · FR E
75F	12E	not published	UK E · US DDD · EU F · FR F
75G	12F	not published	UK F · US F · EU G · FR G
75H	12G	not published	UK G · US G · EU H · FR H
75I	not made	not published	not published
75J	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. 3 sizes have no counterpart on the Bras N Things 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

Triumph size guide, read on 2026-09-18.
Bras N Things size guide, read on 2026-09-18.

Bras N Things to Triumph