BEAUFORT RIDING NECESSITIES White Huntshirt, Size womans approximate 38

BEAUFORT RIDING NECESSITIES White Huntshirt.  No ratcatcher collar. Women's Approximate Size 38.
Great white shirt for your formal days!  Short sleeves to be cooler under your coat.
Appears to be in excellent, used condition.  All buttons intact.  Appears to have been tailored with gathering darts on the back, see picture.   Size tag faded, size is Approximate, see measurements. 
Flat Measurements:
Shoulders 16.5"
Bust 40" (Flat pit to pit 20")
Sleeves Short
Back 27"