They Dressed Ingrid Down
With a different hairstyle and clothes that actually fit her (even her "evening gown" looked homemade), she would have been gorgeous. They probably didn't want her to look better than Goldie Hawn. Goldie's cute but Ingrid was still beautiful. I guess they wouldn't want her to be too attractive for Julian to overlook.
This positively infantile preoccupation with bosoms!Terry-Thomas about US 1963.Hasnt changed much!