My daughter is 3 years old and average height. I ordered them in regular size 3T/4T. It was true to size down the center, the ties were long but not long enough to style like the photo. The jumpsuit is also a bit long, but that's okay because the ruffles make it really cute! I would say order your child's clothes true to size or one size smaller. Plus, it's awesome stuff and super cute!
Yousie Toddler Dinosaur Girls' Jumpsuit Romper - Stylish Clothing for Kids
38 Review
Capezio Short Sleeve Leotard: Stylish Girls' Clothing Jumpsuit & Romper
39 Review
BluNight Collection Little Girls Ruffle Hi Lo Maxi Skirt Romper Jumpsuit with Belt | Sizes 4-14, made in USA
42 Review
π Limited Too Fashion Romper 1313 Multi: Trendy Girls' Jumpsuits & Rompers for Every Occasion
31 Review