Arshiner Girl Cotton Short Sleeve A Line Skater Casual Twirly Casual Dress Pink

We have improved the material and size, The material is soft cotton fabric, Please be assured the purchase. --------- Size Chart --------- 4-5 Years---- Bust 25.6"/Length 22.8/25.2" 6-7 Years---- Bust 26.8"/Length 24.4/26.8" 8-9 Years---- Bust 28.0"/Length 26.0/28.3" 9-10 Years-- Bust 30.0"/Length 28.3/30.7" 11-12 Years- Bust 31.5"/Length 30.0/32.3" What is the meaning of size 4-5 Years ? --------- The size 4-5 Y Suitable for little girls aged 4 and 5.