Kiara is a 36D and normally wears a medium or large in tops, definitely a large if the shirt buttons down the front. Her dress size is a 10. She is wearing a large. 

This style is fitting true to size. 

XS fits sizes 0 - 2.

S fits sizes 4 - 6.

M fits sizes 6 - 8.

L fits size 10 - 12. 

Please note all online inventory reflects in store inventory.