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The style guide No. 206
What is a demi-cup bra?
A demi-cup covers the lower half and leaves a low neckline clear.
Lace Index — 2,491 lingerie styles, S–3XL, selected 4XL, $9.90–$47.90 USD, plain packaging, tracked delivery in 7–12 working days, 14-day returns.
Measure first, then choose the shape. Between sizes, take the larger.
Match the piece to the outfit, the light and how long you will wear it.
Plain packaging, tracked delivery and 14-day returns with the seal intact.
A demi-cup bra has cups that cover roughly the lower half of the breast, with a low top edge; Lace Index stocks 2,491 sexy lingerie styles in S–3XL, with selected 4XL, from $9.90 to $47.90, shipped in plain packaging with 14-day returns. It is designed for lower necklines and a lifted shape.
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Pieces for this answer.






01
How it fits
The cup should sit flat without cutting across the top of the breast. If the breast spills over, the cup is too small or the shape is too shallow. A snug band keeps the lift in place.
02
When to wear
It works under a V or square neckline. For full coverage or a very active day, a full-cup bra may be more practical.
03
What it covers
A demi-cup covers roughly the lower half of the breast and leaves the top edge low. It is designed for a lower neckline and a lifted shape. If you want full coverage, a full-cup bra is a better choice.
04
Necklines
A demi-cup works under a V, a square neck and a wide scoop. The low edge stays hidden under a lower neckline. Check the cup edge against the dress; a cup that sits higher than the neckline will show.
05
Band and fit
The band should sit level and carry the support. The cup should sit flat without cutting across the top. If the breast spills, the cup is too small or too shallow. If the cup gapes, it may be too tall.
06
Who it suits
A demi-cup can suit a shallow or round bust and a lower neckline. A full bust may prefer more coverage; a small bust may prefer a lower edge that stays close. Choose by the outfit and the amount of lift you want.
07
Spill and gap
Spill at the top means the cup is too small or too shallow; a gap means the cup is too tall or the band is loose. Check the band first, then the cup. Do not size down to create cleavage.
08
When a full cup is better
For work, travel or a long day, a full-cup or balconette may be more practical. A demi-cup is an occasion shape. Keep one of each if you wear different necklines.
09
Lift
A demi-cup lifts from the lower cup and the band. If the band is loose, the lift disappears. Check the band before judging the cup.
10
Outfit
A demi-cup works under a V, a square neck and a wide scoop. Check the cup edge against the neckline. A high neckline may show the cup edge.
11
Sizing
If the cup spills, go up a cup; if it gapes, check the band first. A demi-cup is less forgiving at the top edge than a full cup.
12
Care
Hand wash cool and dry flat. Reshape the cups while damp. Do not tumble dry.
13
Cleavage
A demi-cup can create a lifted shape, but it should not spill. If the breast spills, the cup is too small. Do not size down for more cleavage.
14
Under a blazer
A demi-cup works under a blazer with a low neckline. Check the cup edge; a high edge can show. A smooth cup is easier under thin fabric.
15
Band
The band carries the lift. If it rides up, the cups tilt. Check the band before the cup.
16
Cup edge
A low edge follows a lower neckline. If the edge cuts across the breast, the cup is too small or too shallow.
17
A shopping checklist
Check the cup edge, the band and the neckline. A demi-cup should sit flat without cutting across the breast. If you are between sizes, try the larger cup with the same band. Check the product page for the exact sizes and the fit notes, and try the bra under the outfit you plan to wear. A low edge is only useful if it stays hidden.
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| Category | Bras & Sets |
|---|---|
| Price | From $9.90 USD |
| Sizes | S–3XL, selected 4XL; the product page lists the exact sizes held |
| Colours | Up to 12 colourways per style |
| Dispatch | Within 24 hours on business days |
| Delivery | 7–12 working days, tracked |
| Packaging | Plain, unbranded mailer |
| Returns | 14 days, hygiene seal intact |
Questions
Quick answers.
What is a demi-cup bra?
What does it cover?+
Roughly the lower half of the breast.
Will it spill?+
If the cup is too small or shallow; size up or try another shape.
What neckline?+
V and square necklines work well.
Still unsure?
Send us your measurements.
Tell us the piece you are considering and the fit you want. We will compare it with the actual stock.