Size Guide

Take me straight to Size & Body measurements in CM

Take me straight to Size & Body Measurements in INCHES

Who hasn't gone mental trying to figure out what size to buy for their kids? We probably would have been able to fly to the moon and back with the time we have spent trying to understand measurement. We wish we had a magic wand to tell you exactly what the right size is, but until we figure that one out, we've put together this handy guide and when in doubt you can always contact us.

Our clothing accommodates a range of measurements within each age group, ensuring comfortable wear as your child grows. For maximum longevity, we suggest looking at the height of your child and going for the size which will give them some extra room to grow. For example, if your child is close to the maximum height for their size, consider going up. You didn’t hear this from us, but rumour has it that Adeline and Anaïs (both above 164cm in height) happily snuggle up at night in the size 13Y pyjamas!

Size & Body measurements in CM

Morning Marvels	You child’s height
3Y: 86 - 98cm	80 - 90cm → choose our 3Y 90+ cm → we recommend our 5Y
5Y: 104 - 110cm	104 - 108cm → choose our 5Y 110+ cm → we recommend our 7Y
7Y: 116 - 122cm	116 - 120cm → choose our 7Y 120+ cm → we recommend our 9Y
9Y: 128 - 134cm	128 - 132cm → choose our 9Y 132+ cm → we recommend our 11Y
11Y: 140 - 146cm	140 - 144cm → choose our 11Y 144+ cm → we recommend our 13Y
13Y: 152 - 158cm	choose our 13Y

For 3Y long PJs : If your child’s head circumference is above 51cm, and they need a wider head opening in order to be comfortable, then you should size up. However, if your child is not bothered by the collar being slightly tighter when dressing, you can fit a 52.5cm head just fine. Even our founder’s extra small head of 54cm (though no small brain!) was able to fit through it.

Body measurement in cm
	3 years	5 years	7 years	9 years	11 years	13 years
Age (year)	3Y	5Y	7Y	9Y	11Y	13Y
Height	86/98	104/110	116/122	128/134	140/146	152/158
Chest	55	59	63	67	72	77
Waist	51	54	57	59	61	66
Hips	59	63	67	71	75	81

Size & Body measurements in INCHES

Morning Marvels	You child’s height
3Y: 33.9–38.6in	31.5–35.4in → choose our 3Y 35.4in+ → we recommend our 5Y
5Y: 40.9–43.3in	40.9–42.5in → choose our 5Y 43.3in+ → we recommend our 7Y
7Y: 45.7–48.0in	45.7–47.2in → choose our 7Y 47.2in+ → we recommend our 9Y
9Y: 50.4–52.8in	150.4–52.0in → choose our 9Y 52.0in+ → we recommend to our 11Y
11Y: 55.1–57.5in	55.1–56.7in → choose our 11Y 56.7in+ → size up to our 13Y
13Y: 59.8–62.2in	choose our 13Y

For 3Y long PJs : If your child’s head circumference is above 20”, and they need a wider head opening in order to be comfortable, then you should size up. However, if your child is not bothered by the collar being slightly tighter when dressing, you can fit a 20.7 in head just fine. Even our founder’s extra small head of 21.3 in(though no small brain!) was able to fit through it.

Body measurement in inches
	3 years	5 years	7 years	9 years	11 years	13 years
Age (year)	3Y	5Y	7Y	9Y	11Y	13Y
Height	34/39	41/43.5	46/48.5	50.5/53	55.5/57.5	60/62.5
Chest	21.65	23.22	24.8	26.38	28.35	30.31
Waist	20.08	21.26	22.44	23.23	24.01	25.99
Hips	23.23	24.8	26.38	27.95	29.52	31.89

For 3Y long PJs : If your child’s head circumference is above 51cm/ 20”, and they need a wider head opening in order to be comfortable, then you should size up. However, if your child is not bothered by the collar being slightly tighter when dressing, you can fit a 52.5cm head just fine. Even our founder’s extra small head of 54cm (though no small brain!) was able to fit through it.

Growth-Friendly Features
Every piece features adaptable design elements like rollable sleeves and adjustable hems, letting you customise the fit as needed. This smart design approach extends the garment's wearability through growth spurts.

Fabric Care & Quality
The fabric we use combines exceptional softness with natural moisture-wicking properties, keeping your child comfortable throughout their busy day.