This dress is perfect for today because you can completely see its foundation garment. Designed by Pierre Balmain circa 1955, this is a lovely evening dress made of embroidered silk grosgrain with a linen lining and supported by boning and silk tulle. The boned petticoat was a separate garment (rather than being attached to the inside of the dress, as with a corselet). I saw these garments on display in the Golden Age of Couture Exhibit, and they were each as beautiful as the other.
When worn together, as intended, you can see how the two garments complete each other. The sheer insets on the embroidered dress allow the airy petticoat to show through in a tasteful way.
The petticoat was made of boned silk net, rather than the cotton net I posted about earlier today.
It's not too unusual to see patterns from the 50s for this type of strapless petticoat. Wouldn't it be gorgeous under a sheer or lace dress with a boat neck and little sleeves?