My 4 year old daughter is very tall and thin. She usually wears 5/6 dresses. I ordered XS and this shirt was tight at first and almost knee length. I would say it is equivalent to a 4T dress.
Adorable TABNIX Toddler Little Girlsβ Short Sleeve T-Shirts: 4-Pack Graphic Cotton Tops for Size 2-7 Years
44 Review
Stylish Woxlica E Girl Clothing: Trendsetting Graphic Print Summer Crop Top for Teen Girls
43 Review
Shamrock Girls' Summer Sleeve Shirts - Girls' Clothing and Tops, Tees & Blouses
44 Review
Shop the Comfy and Tag-Free Kid Nation Crewneck T-Shirt Collection π for Girls! Top-Notch Clothing, Tops, Tees, and Blouses for Your Little Fashionista!
45 Review