dear customer please read the size chart below carefully before order to save your money or time, We need chest ,waist(or belly) measurement, from shoulder to skirt bottom measurement, height from head to toe. Size 0 to 3 months: Chest: 16” (40.64 cm) Size 3 to 6 months: Chest: 17” (43.18 cm) Size 6 to 9 months: Chest: 17.5” (44.5 cm) Size 9-12 months: chest 18''(45.7 )Height: 28-30” (71.12 cm - 76.2 cm) * Weight: 18-24 lbs Size 12-18 months: chest 19'' (48.26cm)Height: 30-32” (76.2 cm – 81.28 cm) * Weight: 22-28 lbs Size 24 months: chest 20'' (50.8cm)''Height: 32-34” (81.28 cm – 86.36 cm) * Weight: 26 - 30 lbs Size 1T Height: 31” (78.74 cm) * Weight: 20- 26 lbs * Chest: 17.5” (44.45cm) Size 2T Height: 34” (86.36 cm) * Weight: 26 - 30 lbs * Chest: 19” (48.26 cm) Size 3T Height: 37” (93.93 cm) * Weight: 30 - 34 lbs * Chest: 21” (53.3 cm) Size 4T Height: 40” (101.6 cm) * Weight: 34 - 40 lbs * Chest: 23” (57 cm) Size 5 Chest: 23.5” (59.69 cm) * Waist: 22” (55.88 cm) Tea Length: 32” (81.28 cm) * Ballerina Length: 30” (76.2 cm) * Knee length: 26.5” (67.31 cm) Size 6 Chest: 24.5” (62.23 cm) * Waist: 22” (55.88 cm) Tea Length: 33” (83.82 cm) * Ballerina Length: 31” (78.74 cm) * Knee length: 27.5” (69.85 cm) Size 7 Chest: 25.5” (64.77 cm) * Waist: 23.5” (59.69 cm) Tea Length: 35” (88.9 cm) * Ballerina Length: 33” (83.82 cm) * Knee length: 29.5” (74.93 cm)