At the Feb. 2 awards show in Los Angeles, the singer and actress, 55, was business on the top and party on the bottom in a black cropped turtleneck and sultry sheer skirt by Stéphane Rolland.

For some, curtains are unnecessary or even undesirable, but for most, they are integral to providing privacy and helping to keep our homes warm in winter or cool in summer. Sheer curtains offer a way ...