This ad was in the September, 1963 issue of McCall's Magazine. It is slip # 2102, has a lovely applique trim and in "all the wonderful colors: blue, pink, honey and red. White too."
I hate to see good hair design go to waste! Check out the high Style hair designs in the McCall's September issue, 1963, pages 112 and 113. The Designers of the time weigh in, including Givenchy, Simonetta, Oleg Cassini, Nina Ricci and Capucci.