When your bra size changes

Short answer: Bra size changes with weight changes, pregnancy and over time. If you wear the same size for many years without measuring, it rarely still fits.

When it changes

With weight changes, pregnancy, breastfeeding and generally over the years. All three affect both band and cup.

Measure again

Measure under the bust and across the widest point. See how to find your bra size at home.

Signs of the wrong size

The band rides up, the straps cut in, or the cup wrinkles. All three point to the measurements having changed.

Wire-free is more forgiving

Wire-free models in letter sizes follow small changes better than cup sizes. See bamboo bra without underwire.

During pregnancy

The bust changes quickly, and a soft model follows along best. See bras in pregnancy and breastfeeding.

Replace in time

A bra with worn elastic gives the same symptoms as the wrong size. See when should a bra be replaced.

Washing

A laundry bag at 40 degrees extends the life. See the washing guide.

Frequently asked questions

How often should you measure again?

With weight changes, and otherwise every few years.

What are the signs of the wrong size?

The band rides up, the straps cut in, or the cup wrinkles.

Are wire-free models more forgiving?

Yes. Letter sizes follow small changes better.