Size Guide
Every Unique Baby outfit is sized by the garment, in inches, so you can match it to something that already fits. Measure a favorite tee or dress laid flat and compare. Kids sizes run 12M through 12Y, grown-up tees and pants run XS through 4XL. Sizes 2T through 5T on Amazon are the same garments as 2Y through 5Y here.
Between sizes? Most of our styles run a little roomy, so choose the smaller size. Polos run snug, so size up.
Girls
Tutu, flutter and twirl dresses
| Size | Length | Chest | Sleeve |
|---|---|---|---|
| 12M | 17 | 19.5 | 10 |
| 18M | 18.5 | 20.5 | 10.5 |
| 2Y | 19.5 | 21.5 | 12 |
| 3Y | 21 | 22 | 12.5 |
| 4Y | 22.5 | 23 | 13.5 |
| 5Y | 24 | 24 | 14 |
| 6Y | 25 | 24.5 | 15 |
| 7Y | 26.5 | 25.5 | 16 |
| 8Y | 28 | 26.5 | 17.5 |
| 9Y | 30.5 | 28.5 | 19.5 |
| 10Y | 32.5 | 30.5 | 21 |
| 12Y | 35 | 32.5 | 22 |
Girls tees and the tops in 2-piece sets
| Size | Length | Chest | Sleeve |
|---|---|---|---|
| 12M | 12.5 | 20 | 4 |
| 18M | 13.5 | 22 | 4 |
| 2Y | 14 | 22 | 4.5 |
| 3Y | 14.5 | 23 | 4.5 |
| 4Y | 15.5 | 24 | 4.5 |
| 5Y | 16.5 | 25 | 5 |
| 6Y | 17.5 | 26 | 5 |
| 7Y | 18.5 | 27 | 5.5 |
| 8Y | 19.5 | 28 | 5.5 |
| 9Y | 21 | 30 | 5.5 |
| 10Y | 22.5 | 32 | 6 |
| 12Y | 24 | 34 | 6 |
Girls leggings and bell-bottoms
| Size | Length | Waist |
|---|---|---|
| 2Y | 19.5 | 16.5 |
| 3Y | 21.5 | 17.5 |
| 4Y | 23 | 18 |
| 5Y | 24.5 | 19 |
| 6Y | 26 | 19.5 |
| 7Y | 27.5 | 20.5 |
| 8Y | 29 | 21.5 |
| 9Y | 32 | 22 |
| 10Y | 34.5 | 23 |
| 12Y | 37.5 | 24 |
Girls sleeveless jumpsuits and rompers
| Size | Bodice | Pant length | Chest | Waist | Strap |
|---|---|---|---|---|---|
| 2Y | 6.5 | 19 | 21 | 17.5 | 7.5 |
| 3Y | 7 | 20.5 | 22 | 18 | 7.5 |
| 4Y | 7.5 | 22 | 23 | 19 | 8 |
| 5Y | 7.5 | 24 | 24 | 19.5 | 8.5 |
| 6Y | 8 | 25.5 | 25 | 20.5 | 8.5 |
| 7Y | 8.5 | 27 | 26 | 21.5 | 9 |
| 8Y | 9 | 28.5 | 28 | 22 | 9.5 |
| 9Y | 10 | 31.5 | 30 | 23 | 10 |
| 10Y | 10.5 | 34 | 31 | 23.5 | 10.5 |
Boys
Boys tees
| Size | Length | Chest | Sleeve |
|---|---|---|---|
| 12M | 13.5 | 23 | 4.5 |
| 18M | 14.5 | 24 | 4.5 |
| 2Y | 15 | 24.5 | 4.5 |
| 3Y | 16 | 25 | 5 |
| 4Y | 16.5 | 26 | 5 |
| 5Y | 17.5 | 27 | 5.5 |
| 6Y | 18.5 | 28.5 | 5.5 |
| 7Y | 19.5 | 29.5 | 5.5 |
| 8Y | 20.5 | 30.5 | 6 |
| 9Y | 22.5 | 32.5 | 6 |
| 10Y | 24.5 | 34.5 | 6.5 |
| 12Y | 26.5 | 35.5 | 6.5 |
Boys polos
| Size | Length | Chest | Sleeve |
|---|---|---|---|
| 12M | 14.5 | 23.5 | 4.5 |
| 18M | 15 | 24 | 4.5 |
| 2Y | 15 | 24.5 | 5 |
| 3Y | 16 | 25 | 5 |
| 4Y | 16.5 | 26 | 5 |
| 5Y | 17.5 | 27 | 5.5 |
| 6Y | 18.5 | 28.5 | 5.5 |
| 7Y | 19.5 | 29.5 | 5.5 |
| 8Y | 20.5 | 30.5 | 6 |
| 9Y | 22.5 | 32.5 | 6 |
| 10Y | 24.5 | 34.5 | 6.5 |
| 12Y | 26.5 | 36.5 | 6.5 |
Boys shorts in 2-piece sets
| Size | Length | Waist |
|---|---|---|
| 18M | 11 | 16.5 |
| 2Y | 12 | 17.5 |
| 3Y | 13 | 18 |
| 4Y | 14 | 19 |
| 5Y | 15 | 19.5 |
| 6Y | 15.5 | 20.5 |
| 7Y | 16.5 | 21.5 |
| 8Y | 17.5 | 22 |
| 9Y | 19.5 | 23 |
| 10Y | 21 | 24 |
| 12Y | 22.5 | 25 |
Grown-ups
Women's matching tees
| Size | Length | Chest | Sleeve |
|---|---|---|---|
| XS | 25.5 | 36 | 7 |
| S | 26.5 | 39 | 7.5 |
| M | 27 | 41 | 7.5 |
| L | 28 | 43 | 8 |
| XL | 28.5 | 46 | 8 |
| XXL | 29.5 | 50 | 8.5 |
| XXXL | 30.5 | 53 | 9 |
| 4XL | 31 | 56 | 9 |
Women's leggings
| Size | Length | Waist |
|---|---|---|
| XS | 38 | 25 |
| S | 38.5 | 27 |
| M | 39.5 | 28.5 |
| L | 40 | 30 |
| XL | 41 | 31.5 |
| XXL | 41.5 | 33 |
| XXXL | 42.5 | 35.5 |
| 4XL | 43.5 | 38 |
Family pajama pants (men's, women's and unisex)
| Size | Length | Waist |
|---|---|---|
| 3XS | 38 | 25 |
| 2XS | 38.5 | 26.5 |
| XS | 39.5 | 27.5 |
| S | 40 | 29 |
| M | 41 | 30.5 |
| L | 41.5 | 34.5 |
| XL | 42.5 | 36 |
| XXL | 43.5 | 38 |
| XXXL | 44 | 40 |
| 4XL | 45 | 42 |
How to measure
- Length. Shoulder seam straight down to the hem. For pants and leggings, waistband to hem down the outside of the leg.
- Chest. All the way around the garment just under the arms. Lay it flat, measure across, and double it.
- Waist. All the way around the waistband while it is relaxed, not stretched. Elastic waists have a few inches of stretch on top.
- Sleeve. Shoulder seam to the end of the cuff.
Still not sure? Send us a note with your child's age, height and the outfit you are looking at and we will tell you what to order.