Nice Saint Laurent Rive Gauche Silk Top from the 1970's. 
Made of 100% natural Silk in Paris France. 
Great condition...Marked a Size 42.. would work for an XS up to a Large depending on fit preference. 
The color is a Rich Butterscotch.. it looks washed out in some of the photos. 

Compare measurements with an item you own for best fit.

Measurements: 
Pit to pit: 20.5"
Hips 21.5" 
Length: 26"

Thanks for checking this out, please let me know if you have any questions or would like additional photos or measurements!