What a rare find - a BNWT sleeveless summer dress from Moschino's SS 2009 Runway show (see last picture).

Pretty blue and violet abstract print (also used in a skirt and top)
80% cotton, 20% silk (Belt has a higher silk content)
Statement pleats around the neck
Could use the pretty self tie belt provided, or change it up as the runway shot shows.

Perfect for the Summer Season. 
Although label says UK 6 (IT 38) this comes up bigger. I'm a small 10 and it fits me. See measurements below:

Pit to pit 17 inches
Length 38 inches
Made in Italy.