Wacoal to ThirdLove bra size
The short answer
Wacoal 34DD is ThirdLove 34E by the two brands' own charts. 2 of 8 Wacoal sizes land on a different label at ThirdLove.
Cups are counted along each brand's own letter order, and the band is carried across unchanged.
| Wacoal | ThirdLove, by chart | Same label | ThirdLove 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 | 34E | not published | not published |
| 34DDD | 34F | not published | not published |
| 34G | 34G | not published | not published |
| 34H | 34H | not published | not published |
| 34I | not made | not published | not published |
| 34J | not made | not published | not published |
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.
Sources
- Wacoal size guide, read on 2026-09-17. Wacoal on TrueToSize
- ThirdLove size guide, read on 2026-09-17. ThirdLove on TrueToSize