Bras N Things to Montelle Intimates bra size

The short answer

Bras N Things 12F is Montelle Intimates 34G by the two brands' own charts.

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

Every Bras N Things size read across to Montelle Intimates. AU sizes on the left, US on the right.
Bras N Things	Bras N Things builds it for	Montelle Intimates, by chart	Same label	Montelle Intimates builds it for	Montelle Intimates also prints
12A	not published	34A	not published	not published	FR A
12B	not published	34B	not published	not published	FR B
12C	not published	34C	not published	not published	FR C
12D	not published	34D	not published	not published	FR D
12DD	not published	34E/DD	not published	not published	FR E
12E	not published	34F/DDD	not published	not published	FR F
12F	not published	34G	not published	not published	FR G
12G	not published	34H	not published	not published	FR H

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

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

Montelle Intimates to Bras N Things