The 60-Second Fit Check: Too Small, Shrunk, or Cut Small?

The three culprits, one at a time

She actually grew

This is the answer most of the time, and it's the easiest one to miss, because growth doesn't show up evenly. A baby can outgrow length before she outgrows width, or the other way around, which is why a onesie can feel too small in the shoulders while still buttoning fine at the bottom. If you're only a few weeks in and already sizing up, that's normal. Newborn sizing moves fast: newborn size runs out faster than most parents expect.

It shrank in the wash

Shrinkage is the one-time settling most natural fibers go through in their first few washes, usually driven by dryer heat more than the wash itself. It's a single adjustment, not an ongoing shrink with every load after that. So if a piece has been through dozens of washes and only just started feeling tight, that's growth, not laundry.

It was just cut small

Sizing isn't standardized across brands, and it's not even standardized across styles within the same brand. A jabla, a romper, and a swaddle can carry the same size number and still fit three different ways, because each is cut for different movement. Early-weeks styles are cut with genuinely different proportions: a "small" fit is often a design choice, not a defect and not a growth spurt.

What to check before you wash anything

A quick sequence that tells you which of the three you're dealing with:

• Compare the garment flat against one the same size that still fits, ideally the same brand
• Measure underarm to hem, not just how tight it feels going over her head
• Check whether it's the length, the width, or just the neckline and cuffs that feel small
• Try it again later in the day. Babies fit differently morning to evening
• Note the style. A romper and a jabla in the same labeled size aren't the same garment

Why the same size fits differently across brands

A size label is a brand's own estimate of fit, not a universal measurement. That's why a "3-6 months" tag from one brand can differ from another by weeks of growth, especially with gifted clothes and hand-me-downs that mix brands with no consistent baseline. The reliable fix isn't the tag, it's the garment: does she have room at the shoulders, can she move her hips and knees freely, is the length still covering her when she stretches. Fit is the signal, not the number on the tag.

Frequently asked questions

Is it normal for the same size number to run differently between brands? There's no shared industry standard for baby clothing sizes, so a "3-6 months" label can mean different measurements depending on the brand it came from.

Should new clothes be washed before the first wear? Washing new pieces before first use is common, but it's personal preference, not a rule. It won't change how a well-made piece fits.

My baby is right on the line between two sizes. Which do I pick? If she's between sizes, the larger one usually gives more wear before you're back here again, especially through a fast-growing stretch.

A note from Bali

We hear a version of this question all the time, and it's rarely as simple as "she grew" or "it shrank." Fit is layered. Check before you retire a piece that might still have weeks left in it. When we choose what to stock, we look for cuts with room to grow into, not pieces that fit perfectly for a month and then not at all. If you're restocking for a growth spurt, our online store is there when you're ready, no rush.