Vanity Fair to Wacoal bra size

The short answer

Vanity Fair 34DD is Wacoal 34DD by the two brands' own charts. 0 of 8 Vanity Fair sizes land on a different label at Wacoal.

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

Every Vanity Fair size read across to Wacoal. US sizes on the left, US on the right.
Vanity Fair	Wacoal, by chart	Same label	Wacoal also prints
34A	34A	not published	not published
34B	34B	not published	not published
34C	34C	not published	not published
34D	34D	not published	not published
34DD	34DD	not published	not published
34DDD	34DDD	not published	not published
34G	34G	not published	not published
34H	34H	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. 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

Vanity Fair size guide, read on 2026-09-18.
Wacoal size guide, read on 2026-09-17. Wacoal on TrueToSize

Wacoal to Vanity Fair