The color is light magenta over a blue-purple undertone on a white cotton base.  The moonbeams are a freehand design that flatters the neckline in a special way.  

The model is wearing a size Small for reference.  She is a dress size 4-6.

Unisex sizing, measures approximately 

Small

17" across the bust

24' length from shoulder to hem

100% cotton.  
Washing instructions: Machine wash and dry on any setting.