Triangle Bra Fit Questions Answered: Trésor Infini & Secret Memories
By Aubade® Official Store: French Luxury Lingerie | Published: 2026-11-03
Category: Productrecensies
Get clear answers to common triangle bra fit questions, from underwired sizing to support, using Aubade's Trésor Infini and Secret Memories as real examples.
Quick answer
Start with your usual band size, then use the cup fit to decide between an underwired triangle bra like Trésor Infini or Secret Memories. Underwiring adds structure, but the right size still depends on how the center gore and cups sit on your frame.
Why underwiring changes the triangle bra fit conversation
A triangle bra without underwiring relies on fabric tension and band fit for shape. An underwired triangle bra adds a structured wire along the base of each cup, which can make sizing less forgiving around the ribs and more dependent on cup depth. That is why the same band size can feel different from one triangle style to another.
For a French triangle bra guide, the useful question is not just “what size am I?” but “where does this style put pressure?” If the wire sits on breast tissue at the sides or the center gore floats away from the sternum, adjusting the band or cup is more effective than tightening the straps.
What support means in a triangle shape
Support in a triangle bra comes from three places: the band, the wire (when present), and the fabric tension across the cup. A triangle cup covers less of the upper breast than a full-cup bra, so the band needs to stay level and snug without digging in. If the band rides up at the back, the front will feel less secure even if the cups seem to fit.
Underwired triangle bras can offer reliable support for their shape, but they are not designed to compress or reshape the bust the way a minimizer or sports bra might. Expect a naturally plunging neckline and a lighter feel rather than maximum coverage.
When to size up or down in an underwired triangle bra
If the wire presses into the ribcage or the center gore digs in, try a larger band size before changing cup size. If the cup fabric wrinkles or you spill over the top edge, try a larger cup. If the cup gapes at the top but the wire feels comfortable, the cup may be too deep for your shape rather than too large.
Because underwired triangle bras vary in cup construction, treat the first try-on as a fit check, not a final judgment. Fasten the band on the loosest hook, scoop breast tissue into the cups, and check the wire line before deciding.
Triangle bra fit questions, answered
- Should I size up in an underwired triangle bra?
- Only if the wire or band feels tight. Start with your usual band size and adjust the cup if the wire sits correctly but the fabric gapes or spills. Sizing up the band when the cup is the issue can make the bra ride up. Check the wire line first, then the cup volume.
- How do I know if the cup is too small?
- Look for spillover along the top edge, the wire pressing into breast tissue at the sides, or the center gore lifting away from the sternum. These signs usually mean you need a larger cup, not a tighter band.
- Can a triangle bra give enough support for larger cups?
- It depends on the construction. An underwired triangle bra like Trésor Infini, which is available up to cup size F, uses a wire and band to support the bust. It will not feel as compressive as a full-coverage bra, so judge support by whether the band stays level and the wire stays flat.
- What if the center gore does not lie flat?
- A floating gore often means the cup is too small or the band is too loose. Try a larger cup first. If the gore still lifts, the bra's wire shape may not match your ribcage contour, and a different style may fit better.
- How should the straps feel on a triangle bra?
- Straps should stay in place without bearing the weight of the bust. If you need to tighten them heavily to keep the cups in place, the band is probably too loose. Adjust the band first, then fine-tune the straps.
Product facts
- Trésor Infini Underwired triangle bra: Trésor Infini is an underwired plunging triangle bra available up to cup size F, with floral embroidery and lurex threads extending almost to the shoulder. The extended embroidery adds visual detail along the upper cup, so check that the fabric lies flat when you move rather than assuming the cup size alone tells the whole story.
Trésor Infini Underwired triangle bra - Secret Memories Triangle: Secret Memories is an underwired triangle bra with tone-on-tone graphic embroidery and satin ribbons, designed for a naturally plunging neckline. The structured embroidery and ribbon details can affect how the cup edge sits, so pay attention to whether the neckline stays smooth under clothing.
Secret Memories Triangle
