LittleSpring Little Girls' Dresses Butterfly Cotton Blend Girls Dress Size 3-4T(height 34-38inch/90-100cm) Weight(29-33 pounds) Girls Dress Size 4-5T(height 38-42inch/100-110cm) Weight(33-42 pounds) Girls Dress Size 5-6T(height 42-46inch/110-120cm) Weight(42-46 pounds) Girls Dress Size 6-7T(height 46-50inch/120-130cm) Weight(46-53 pounds) Girls Dress Size 8-9T(height 50-54inch/130-140cm) Weight(53-58 pounds)