My daughter is 3 years old, I chose the 4T as it is quite long and fits perfectly. If your 3 year old is medium or taller I would recommend this size.
Stylish Woxlica E Girl Clothing: Trendsetting Graphic Print Summer Crop Top for Teen Girls
43 Review
Adorable TABNIX Toddler Little Girlsβ Short Sleeve T-Shirts: 4-Pack Graphic Cotton Tops for Size 2-7 Years
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
Girls' Clothing: Spotted Zebra π§ Toddler Long Sleeve Tops, Tees & Blouses
49 Review