Bodies change, and so does elastic. A bra that fit well a few months ago can stop fitting because your kid grew, because the fabric wore out, or both at once.
Quick check
Make sure it's positioned right and the straps are adjusted, then run the 5-point fit check. After that, compare current measurements to that brand's chart.
Signs it's time to remeasure
- The band or front feels noticeably tighter than it used to.
- It shifts or rides differently even with normal adjusting.
- Coverage that used to feel fine doesn't anymore.
- The straps need constant readjusting.
- Your kid seems to always be fussing with it.
Could it just be a worn-out bra?
Yes, easily. Elastic loosens up over time, fabric changes after enough washes, and removable pads can lose their shape. Compare the old bra with a newer one if you can, and check whether the band has actually lost its stretch-back.
When to remeasure
Remeasure when a bra that used to feel fine starts causing ongoing problems, before buying several of the same new style, or whenever the current fit doesn't seem to match the brand's chart anymore.
Don't go by age or a birthday
There's no rule that says a bra needs replacing at a certain age. What matters is how it actually fits now — not how old it is.
Replace a few at a time
If the size or preferred style is changing, buying a whole new drawer of bras at once can be a waste of money. Get one or two first, make sure the new fit actually works, then buy more.
Sometimes it's about preference, not just size
Your kid might want more coverage, a different strap style, or more support for sports — even if their measurements have barely changed. That's a preference, and it's a separate decision from an actual size change.
Next step
Still stuck? Head back to Fit Problems or try the Size Assistant for what to do next.