According to the size chart to choose your need size.
Size XS:Length 18.4 inch,Bust(front)12.4 inch
Size S: Length 21.2 inch,Bust(front)14 inch
Size M:Length 23.4 inch,Bust(front)15.4 inch

• XS:2-5yr,S:6-9yr,M:10-13yr
• Children's ,Round Neck ,Sleeveless,Good Fabric,Comfortable
• Size: As Shown On the Picture
• 103% Brand new
• Machine Wash

XS:2-5yr,S:6-9yr,M:10-13yr