The hijabi model  height is174 cm and 
-58 kg
She is wearing size 40.
The dress has a  perfect fit. You can  size up for a modest fit.
fabric :Silk crepe
 
Size Guide
Size 36 Bust 32”, Length 54”
Size 38 Bust 34”, Length 54”
Size 40 Bust 36”, Length 55”
Size 42 Bust 38”, Length 55”