Underwire pokes your armpit but the cups fit: width or height?

Armpit poking is often a wire-geometry problem, not a simple size problem.

30-second decision path

Separate wire height, wire width, and displaced cup depth.

Test

Trace where the breast tissue ends and note whether the wire follows it before continuing too high or too far back.

Compare next

Too-tall wires call for less height; too-wide wires may need a narrower, deeper cup; tissue under the wire means it may actually be too narrow.

Avoid

Do not assume every armpit poke means the cup is simply too large.

Run this symptom through Fit Rescue

Too tall

If the wire follows the breast root but continues upward into the armpit, compare shorter side wires and lower side wings.

Too wide

If the wire extends well behind breast tissue and then pokes, compare a narrower wire with more cup depth.

Too narrow can also hurt

A wire sitting on breast tissue can feel like side pain. Check where the tissue actually ends before deciding the wire is too wide.

Cup depth can move the wire

A shallow cup can push tissue outward and distort wire position. More depth may improve comfort without adding overall volume.

Use this as a next-test guide, not a promise. Brand patterns and labels vary. Change one variable at a time when possible.

What to do next

Use Bra Fit Rescue with the bra you have already tried. The tool combines band, cup, wire, center, strap, wear, and asymmetry signals rather than treating one symptom in isolation.