Size Guide

Last Updated: July 24, 2026

Marktox dresses are cut for little girls in sizes 2T-6T (with several styles extending through 12-13Y). Use the age, height, and weight ranges below to choose a size — the age printed on a product page is a sizing guide, not a safety rating, so please check your child's actual height and weight against the table.

US Regular Size Chart

Brand Size	Height (in)	Weight
2T	28 - 31	20 - 24 lb
3T	31 - 35	24 - 30 lb
4T	35 - 39	30 - 36 lb
5T	39 - 43	36 - 44 lb
6-7Y	43 - 47	44 - 55 lb
8-9Y	47 - 52	55 - 66 lb
10-11Y	52 - 57	66 - 82 lb
12-13Y	57 - 61	82 - 99 lb

How to Measure

Height: Measure your child standing barefoot against a wall, from the floor to the top of the head.
Weight: Use your child's current weight, not a projected one — growth spurts vary and this table reflects typical proportions at each height and weight.

Between Two Sizes?

If your child's height and weight point to two different rows, we generally recommend sizing up, especially for occasion dresses that are meant to be worn once or twice and passed down. For everyday cotton dresses, sizing to the closer measurement is usually fine since these fabrics have a little more give.

A Note on Fit

Manufacturing tolerances mean small variations are normal between individual units of the same size. Where a specific product's measurements differ from this general chart, the product page states so.

Still Not Sure?

Email contact@marktox.com with your child's height and weight and the item you're considering, and we'll recommend a size. We reply within 24 business hours.