The band is pretty much the same in both bras. The 32G bra has bigger cups and they are a lot deeper and wider than the 32DDD bra.
32DDD Bra: Shop 32DDD Bra Size
Wacoal Women's Retro Chic Full Figure Underwire Bra, Toast, (30
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A vintage-inspired look and exceptional comfort make our Retro Chic Underwire Bra a favorite among women everywhere. Ideal for full-figured women,
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Wacoal 855186 Cloud Blue Retro Chic Underwire Bra –