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Janie and Jack
Here’s how Janie and Jack fits your child compared to other brands you might be considering, so you know before it’s in your cart.
Find your child’s size in Janie and Jack
Enter your child’s measurements once — we’ll size them in Janie and Jack and at 100+ other brands, each from that brand’s own published chart. Height and weight are required; add chest, waist, hips and inseam to sharpen the fit.
Your child wears one size in Janie and Jack. What should you buy elsewhere?
Pick the size your child wears at Janie and Jack to see which brands have the same label and measurements (twins) and which run shorter or longer (strangers) — based on each brand’s own chart.
Show the full cross-brand table (every size)
| Janie and Jack | Size twinssame number fits the same | Size strangerssame number, different cut |
|---|---|---|
| Preemie/Up to 5 lbs0–17" | — | No same-size match at other brands |
| Newborn17–18" | Hanna Andersson↓ shorterPatagonia Kids↓ shorterBonpoint↓ shorterMacy's First Impressions↓ shorterMini Boden↓ shorterJoJo Maman Bébé↑ longer+7 more | |
| 0 - 7 lbs18–19" | — | No same-size match at other brands |
| 7 - 10 lbs19–23" | — | No same-size match at other brands |
| 0 - 3 m19–23" | — | No same-size match at other brands |
| 3 - 6 m23–25" | — | No same-size match at other brands |
| 6 - 12 m25–29" | — | No same-size match at other brands |
| 12 - 18 m29–31" | — | No same-size match at other brands |
| 18 - 24 m31–33" | — | No same-size match at other brands |
| 2T33–36" | Garanimals↓ shorterMacy's Epic Threads↓ shorterMacy's First Impressions↓ shorterThe Children's Place↓ shorterWalmart Wonder Nation↓ shorterH&M Kids↑ longer | |
| 336–39" | ||
| 439–42" | ||
| 542–45" | Il Gufo↓ shorter | |
| 645–48" | Bonpoint↓ shorterIl Gufo↓ shorterConverse Kids↓ shorterU.S. Polo Assn.↓ shorterMini Mioche↓ shorterLevi's Kids↓ shorter+1 more | |
| 748–51" | Converse Kids↓ shorterLevi's Kids↓ shorterNext Kids↓ shorterMonica + Andy↓ shorterU.S. Polo Assn.↓ shorterMagnetic Me↓ shorter | |
| 851–54" | Il Gufo↓ shorterBonpoint↓ shorterU.S. Polo Assn.↓ shorterNext Kids↓ shorterMini Mioche↓ shorterJacadi↓ shorter+8 more | |
| 1054–58" | Il Gufo↓ shorterBonpoint↓ shorterGymboree↓ shorterHudson Baby↓ shorterTea Collection↓ shorterThe Children's Place↓ shorter+12 more | |
| 1258–60" | U.S. Polo Assn.↓ shorterNoralee↑ longerRylee + Cru↑ longerIl Gufo↓ shorterColumbia Kids↓ shorterGuess↓ shorter+17 more | |
| 1460–62" | Petit Bateau↑ longerLacoste Kids↑ longerCarter's↓ shorterLittle Planet by Carter's↓ shorterMini Mioche↑ longerOshKosh B'gosh↓ shorter+5 more | |
| 1662–64" | Petit Bateau↑ longerAppaman↑ longerLacoste Kids↑ longerJustice↓ shorterReebok Kids↓ shorterWalmart Wonder Nation↓ shorter+3 more | |
| 1864–66" | Justice↓ shorterWalmart Wonder Nation↓ shorterPetit Bateau↑ longerCat & Jack↓ shorterTommy Hilfiger Kids↓ shorterColumbia Kids↓ shorter+5 more |
Sizes shown use Janie and Jack’s girls’/unisex chart where the brand splits by gender; boys’ sizes at the same number can run slightly taller.
In short
Where the number just works. At Preemie/Up to 5 lbs, 0 - 7 lbs, 7 - 10 lbs, 0 - 3 m, 3 - 6 m, 6 - 12 m and more, Janie and Jack lines up with every brand we track — the size carries straight over.
Where labels drift. The exceptions are the “strangers” above — e.g. at size 7, Converse Kids, Levi's Kids, Next Kids cut the same number differently. Check those before you trust the label.
Bottom line: for most sizes, a Janie and Jack number is a safe bet elsewhere — measure once, then double-check only the handful of “stranger” brands above.
Curious about a size that isn’t your child’s here? Every size, compared across every brand, lives here: Browse all size comparisons →
Fit & the transitions that trip parents up
Janie and Jack-specific things the size number alone won’t tell you — drawn from its own charts.
Runs big — size down
Janie and Jack is generous across both boys’ and girls’ lines, so slim or petite kids usually size down, and a child stays in a size a long time.
Girls’ dresses run especially roomy
The dresses run long in the length and open at the neckline, so size for the fit you want now rather than for growing room you may not need.
Boys and girls are charted separately
This upscale, classic line charts boys and girls on separate ladders, so match your child to the right one.
Specialty & inclusive fits
Which trimmer, roomier, or adaptive cuts Janie and Jack publishes alongside its standard sizes.
What shoppers say about the fit
Community consensus
Shopper opinion · not Little & Youth’s measurementThis is what parents report anecdotally — crowd sentiment, not a Little & Youth determination. Our sizing above is computed from Janie and Jack’s own published chart; the notes here come from public parent discussion.
Janie and Jack runs big. Parents consistently find it generous across both boys’ and girls’ lines — a child stays in a size a long time, and slim or petite kids in particular usually size down. Girls’ dresses run especially roomy in length and neckline. It’s upscale, classic children’s wear, so size for the fit you want now rather than for growing room you may not need.
Based on anecdotal discussion from multiple publicly available online sources; your experience may differ.
Should you buy Janie and Jack?
Consider it if…
- You want classic, dressy pieces — Janie and Jack is known for polished, occasion-ready children’s wear.
- You buy for quality — premium fabrics and finishing built to hand down.
- You want coordinated looks — matching, seasonally-styled collections for a put-together outfit.
Think twice if…
- You’re price-sensitive — it’s premium ($$$), best bought on one of its sales.
- You want everyday play basics — it leans dressy and classic, not rough-and-tumble playwear.
- You want trend-forward styles — it’s traditional and timeless, not fashion-led.
Skip the cross-referencing — let Little & Youth do it.
Enter your child’s measurements once. We’ll show their Janie and Jack size and their size at 100+ other brands, each from that brand’s own chart.
Find my child’s size →Shop Janie and Jack ↗A few things parents ask that the chart won’t tell you
Is Janie and Jack worth the price?
For dressy, occasion and heirloom-style pieces, long-time buyers tend to say yes — the quality holds up and hands down, and it’s best value on sale. For everyday play clothes that get destroyed, cheaper brands make more sense.
Is Janie and Jack good for special occasions?
Yes — it’s a go-to for weddings, holidays and photos, with classic dressy pieces and coordinated looks. Size for the fit you want on the day, since it runs generous.
What measurements do I need to size Janie and Jack accurately?
Janie and Jack publishes height, weight, chest, waist, hip in its size chart. Height is the primary driver, and the chest/waist figures let you confirm body fit for a child between sizes.
Do Janie and Jack boys’ and girls’ sizes fit the same?
From the bigger sizes up, Janie and Jack publishes separate girls’ and boys’ charts, so the same number can differ by gender. The figures on this page use Janie and Jack’s girls’/unisex chart.
How do Janie and Jack’s shoe and sock sizes work?
Janie and Jack carries kids’ shoes alongside its clothing. Kids’ shoe sizes go by foot length rather than age, and the same size number isn’t cut the same from brand to brand — so measure your child’s foot and check it against the chart. Janie and Jack’s socks are sized by shoe size, not age — buy for your child’s current shoe size, and if they fall between two ranges choose the smaller so the sock stays up. See how every kids’ shoe brand runs and how wide each is cut on our kids’ shoe sizing guide.
Where do I buy Janie and Jack?
Janie and Jack is sold on its own site and on Amazon, so you can pick the marketplace you prefer.