Lovely plain lilac vintage 1980s blouse with ruffled shoulder part and pleated sleeves. 
Marked size XL/42, better fits smaller sizes like S-L depending on preference of fit. Modeled on size S with 1,68 m/5"6. 
Measurements:
Bust 48 cm
Length 58 cm
Sleeves 54 cm
Shoulders 38 cm
In a very good vintage condition.