Stunning Elsie Whiteley Pussy Bow Blouse. 
In excellent condition. 
Slight sheen to fabric, possibly satin. 
Single button cuffs, dropped shoulder seams. 
Central front buttoning. Great collar and tie. 
For the fuller figured shape. 
Labelled as a UK 22 (vintage sizing)
Measurements laid flat:
Pit to Pit: 23.5"
Bust: 22.75"
Waist: 21.75"
Length from collar: 20.5"