Beautiful pink early 60's I Magnin linen dress

This dress is for a beautiful I Magnin dress from the early 60's. I don't believe it's ever bean worn and it is in a "like new" condition. It comes with a thin belt which is not in the photos. The color is quite stunning and the contast stitching makes it very subtle. I believe it would fit best a modern size 6 or 8. Please see the measurements bellow: Bust across: 18" Waist: 15.5" Hips: 20"