Family Matching Big Sister T-shirt and Little Brother Romper Outfits Set !! Size Chart unit:cm little brother size recommanded age 0-3 month bust 38 length 34 recommanded age 3-6 month bust 44 length 37 recommanded age 6-9 month bust 48 length 40 recommanded age 12-18 month bust 52 length 43 recommanded age 18-24 month bust 54 length 46 big brother size S recommanded age 0-24month bust 31*2 length 36 M recommanded age 2-4Y bust 36*2 length 45 L recommanded age 6-8Y bust 39*2 length 52 XL recommanded age 8-10Y bust 43*2 length 58 Note: Please compare above detailed size with your measurement before purchase. Please allow 1-2cm differs due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the pictures, but not the same performance on different bodies as on the model.