If you're buying clothes for a baby shower, the safest choice is to size up: reach for 3–6 months or 6–12 months rather than newborn. Most babies spend only a few weeks in newborn sizes, and some skip them altogether, so a slightly larger size gets far more wear. From there, match the size to the season the baby will actually be that age.
That's the whole answer, really. But a few small decisions make the difference between a gift that gets worn on repeat and one that sits folded in a drawer with the tags on. Here's how we think about it.
Why newborn clothes are a risky gift
Newborn is the size everyone reaches for first, because it looks the part. It's also the size a baby grows out of fastest. Newborn clothing is generally cut to fit up to around eight pounds, and the average baby in the United States is born close to that already — roughly 7.5 pounds, with full-term averages landing near 7 lb 6 oz for boys and 7 lb 2 oz for girls (Medical News Today). A healthy birth weight spans a wide range, from about 5.5 to 10 pounds (Pampers).
What that means for a gift: a baby born on the larger end may never wear newborn size at all, and a baby born near average often moves into the next size within a few weeks. Buy newborn and you're betting on a narrow window that may already be closed by the time the box is opened. Size up and the odds swing back in your favour.
The best sizes to give — and why
3–6 months: the reliable choice
If you want one safe size, this is it. By the time a baby reaches this stage they've settled into a steadier rhythm, and the clothes tend to fit for a good stretch. It's late enough that the newborn scramble is over, early enough that the pieces still feel like “baby” rather than “toddler.”
6–12 months: great for later in the year
If the shower is well ahead of the due date, or you simply want the gift to land a little further down the road, 6–12 months buys the parents time. It's the size that's still waiting when the closer sizes have been outgrown, and parents are often surprised by how quickly they need it.
Newborn and 0–3 months: give sparingly
There's nothing wrong with one sweet newborn piece if you love it — a single sleeper or a going-home outfit. Just treat it as a keepsake rather than the practical part of your gift. If you're unsure how these two smallest sizes differ, we wrote a short guide on newborn versus 0–3 months.
Match the size to the season
This is the step most people skip, and it's the one that quietly makes a gift wearable. A baby's size and the weather need to line up. A 6–12 month romper is lovely, but not if the baby hits that size in the middle of winter and it's short-sleeved.
The simple move: think about roughly when the baby will be the age you're shopping for, then picture the weather then. A baby due in autumn will be in 6–12 month sizes around the following spring and summer, so lighter layers make sense. A spring baby will grow into those same sizes heading into cooler months, so long sleeves and something warm to go over them will get more use. You don't need to be precise — just aim the season and size in the same direction.
What if you don't know the due date or the baby's size?
You usually won't, and that's fine. That uncertainty is exactly why sizing up works so well: it removes the guesswork about how big the baby will be at birth. Pick 3–6 or 6–12 months, aim the season roughly right, and you've covered the two things that actually matter. If you know the family is expecting a larger or smaller baby, you can nudge your choice, but you don't have to.
A few gift notes that make life easier for the parents
Beyond size, small things help. Choose pieces that are easy to get on and off — snaps and stretchy necklines beat fussy fastenings when someone's dressing a wriggling baby at 3 a.m. Natural fabrics like cotton tend to be a safe, comfortable bet against new skin; we say more about that in our note on why cotton.
Keep the gift receipt in the box, too. Parents often end up with more of one size than another, and being able to swap or size up is a kindness, not a slight. It's the same reason a gift that grows with the baby — or one that can be passed on when it's outgrown — tends to be the one families remember.
A calmer way to give
If you'd rather not gamble on a single size at all, there are gentler options. A stage-based gift box spreads the pieces across sizes so something always fits next. Well-made pre-loved clothing is another quietly generous choice: it's easier on the budget, keeps good pieces in circulation, and for fast-changing sizes it often makes more sense than buying new. You can browse everyday essentials in our full collection, or look through gently used pieces in the ReStitched line.
However you choose, the principle holds: size up, aim the season right, and give something that will actually be worn. A baby can only wear one newborn outfit at a time, and only for a little while. The gift that fits a few months from now is the one that gets remembered.
