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39 inches =
99.1 cm
Any bust measurement from 98 to 100 cm rounds to 39 inches. In So Glamy camisoles and night suits that is XL (UK 14, US 10, EU 42).
A bra size needs two measurements. Your underbust (snug round the ribcage, just under the bust) sets the band; the gap between bust and underbust sets the cup. With a 39 inch bust:
| Underbust (in) | Underbust (cm) | Bra size | So Glamy bra |
|---|---|---|---|
| 37–39 | 94–99 | 38A | XXL |
| 35–37 | 89–94 | 36C | XL |
| 33–35 | 84–89 | 34DD | XL |
Our bras are sized S to XXL by the band. With a DD cup or bigger we suggest one size up, which the last column already allows for.
Camisoles and night suits are sized by bust, so a 39 inch bust is XL in our camisoles and night suits.
From here, full coverage and a wider underband start to matter for comfort over a long day. Look for cups that cover the whole breast without spilling at the sides, and straps that sit flat rather than cutting in.
If the straps leave red marks by evening, the band is not doing its share of the work. A firmer band, not tighter straps, is the fix.
