I would say they are a bit small. I have a size 3T for my child because that is not an option. 4 suits her perfectly. I got 5/6 for my very petite 5 year old. Appropriate but short. I wonder if they shrink a little after washing. I would order a size up for a 5 year old so it will last a little longer if I order again. Cute shirt, especially when Bluey's clothes are so limited right now.
Amazon Brand Sleeveless Chambray Multi Dots Girls' Clothing
62 Review
Spotted Zebra Girls' Short-Sleeve Flutter T-Shirts: Amazon Brand for Fashionable Kids
43 Review
Kid Nation Short Sleeve Crew Neck Heather Girls' Clothing for Tops, Tees & Blouses
52 Review
Shamrock Girls' Summer Sleeve Shirts - Girls' Clothing and Tops, Tees & Blouses
44 Review