Size Chart(Product Measurement):

Bikini Tops:
13 Years: Length: 16.5", Bust: 27.2-35.4", Straps Length: 11.4"

14 Years: Length: 16.9", Bust: 28.3-36.6", Straps Length: 11.8"

15 Years: Length: 17.3", Bust: 29.5-37.8", Straps Length: 12.2"

16 Years: Length: 17.7", Bust: 30.7-39", Straps Length: 12.6"

Bikini Bottoms:
13 Years: Length: 10.6", Waist Size: 23.2-35.8", Hip Size: 27.2"

14 Years: Length: 11", Waist Size: 24.4-37", Hip Size: 28.3"

15 Years: Length: 11.4", Waist Size: 25.6-38.2", Hip Size: 29.5"

16 Years: Length: 11.8", Waist Size: 26.8-39.4", Hip Size: 30.7"