Such a cute little dress- looks to be handmade as no label and feels like viscose (with some weight so the material hangs beautifully) with matching covered buttons. 
 
Pit to pit 19"
Bust 36"
Waist 36"
Inside arm 18"
Length shoulder to hem 35.5"
Modelled on a size 10. 
Would best fit a UK size 8-12. 
 
Price included UK postage. Worldwide postage available.