Loading blog content, please wait...
By Sweet Wink
Grandma Wants to Buy the Outfit and Doesn't Know the Size The text comes in around 8pm: "I found the CUTEST first birthday outfit and I want to get it f...
The text comes in around 8pm: "I found the CUTEST first birthday outfit and I want to get it for the party! What size is she in right now?" And you stare at your phone, because your baby is somewhere between a 6-9 month onesie that still fits and a 12 month sleeper that's finally not swallowing her, and the party isn't for another six weeks. So what do you even say?
This is one of the most common little standoffs we see, and it's a happy one. Grandma wants to buy the outfit. That's the whole gift she's excited about. The only thing standing between her and clicking "add to cart" is a number nobody feels sure about, because babies do not grow on a schedule and the tag size and the actual fit don't always shake hands.
Here's how to give her an answer she can trust, and how our sizing is set up so the guessing gets a lot smaller.
The single most useful thing you can tell Grandma isn't what your baby wears right now. It's when the party is. A first birthday outfit worn at eleven and a half months of age fits very differently than one bought to fit "today" and then packed away for a month and a half.
So instead of "she's in 9 months," the more helpful version is: "The party's the second Saturday of October, and right now she's just growing into her 12 month things." That gives Grandma a target date and a direction. For a baby who's already filling out 12 month clothes with weeks to go, sizing up to 18 months for the party is usually the safer call than betting she'll stay put.
If you want a baseline to sanity-check growth against, the CDC's child growth charts are the same reference pediatricians use, and they're a reminder that the jump between six months and a year is one of the fastest stretches of the whole first year. That's exactly why "today's size" ages out so quickly for a party that's still a month away.
The fastest way to end the back-and-forth is to skip the guessing entirely and hand over the actual measurements. Every Sweet Wink piece is built to a size chart with real dimensions, not just a vague "12 months means 12 months." Boutique sizing runs its own way, and ours is designed with a little room to grow so a milestone outfit isn't outgrown the week after the cake.
If your baby has a onesie or dress that fits well right now, lay it flat and measure it: chest across, length from shoulder to hem. Text those two numbers to Grandma along with the link, and she can match them against our chart in about a minute. Now she's not buying a mystery. She's buying the size that actually corresponds to your baby's body, which matters more than the label on the tag, because two "12 month" outfits from two different brands are almost never the same garment.
This is also the answer to the "what if it's too big" worry. A first birthday outfit that runs a touch roomy photographs beautifully and gets worn again, which is the whole point of the piece. One bought a hair snug for the exact day rarely makes it to a second wear.
If the choice is genuinely too close to call, size up. This is our standing advice for milestone outfits, and it's not just to play it safe. Our first birthday styles, the tutus, the "ONE" sweatshirts, the sparkly sets, are made to carry a little extra life. A sweatshirt that's slightly big at the party is a sweatshirt she's still pulling on that winter. A tutu with a soft elastic waist adjusts across a wide range without looking wrong.
The pieces where sizing up matters least are the ones with stretch and forgiveness built in. The pieces where you want to be a little more careful are anything fitted through the shoulders or with a defined waist. If Grandma's eyeing one of those, that's the moment to actually measure rather than eyeball it.
And a note worth passing along: babies tend to look their happiest and move their easiest in something that isn't fighting them. A little room means she can crawl to the cake, get scooped up for photos, and reach for the frosting without a waistband cutting in. Comfortable baby, better pictures, longer wear. Sizing up quietly wins on all three.
The other half of Grandma's question, even if she doesn't ask it out loud, is when to order. For a first birthday, the sweet spot is a few weeks out, not the week before. Ordering early means the outfit's in hand with time to check the fit against your baby in real life, and time to swap a size if she has a growth spurt that surprises everyone. It also takes the pressure off. Nobody wants a milestone outfit racing the party in a shipping window.
So when you text her back, give her the full picture in one go: the party date, two measurements from an outfit that fits, the link, and a nudge to order in the next couple of weeks. That's everything she needs to buy with confidence and stop second-guessing the size.
The reason this comes up so often is genuinely sweet. A grandma buying the birthday outfit is buying into the moment, the photos, the memory of the whole first year landing on one afternoon. She doesn't want a gift card. She wants that outfit on that baby.
Your job is just to remove the one thing making her hesitate. Give her the date, give her the measurements, tell her to size up if it's close, and let her click the button she's been wanting to click since she found the piece. The number was never the hard part. It just needed to come from you.