Why Your Bra Band Rides Up

Why it happens

The band does around 80 per cent of the work of holding a bra up. When it cannot grip the ribcage, the straps take over, and because the straps pull upward at the shoulders, the back of the band gets dragged up with them. The classic silhouette – band riding between the shoulder blades, straps cutting in, cups sliding down – is one problem with one cause.

Test it in ten seconds

1. Fasten the bra on the loosest hook. If you are already on the tightest hook, the band is too big – that is the answer.
2. Hook a thumb under the band at your spine and pull. If it comes more than about 2 cm from your body, it is loose.
3. Raise both arms straight above your head. If the band climbs, it is loose.

The fix

Go down one band and up one cup, so the cup volume stays the same:

• AU 16C → 14D
• AU 14D → 12DD
• AU 12DD → 10E

Your sister size chart has every combination. If one step down is still loose on the loosest hook, take a second step.

When the band is not the problem

• Straps too tight. Over-shortened straps physically haul the back of the band upward even when the band is the right size. Loosen them until they carry only light tension, then re-test.
• The cup is too small. A cup that cannot contain the tissue pulls the whole structure forward and up. If the centre panel also floats away from your sternum, fix the cup first.
• A stretched-out band. Elastic dies. A bra that has been washed hot, tumble dried or worn daily for two years may simply be finished, and no size change will help.

What to do next

Recalculate from measurements if you have not done that recently – a band that rides up often means the size was estimated from an old habit rather than a tape measure.

Calculate a starting size