MILAN — On both sides of the Atlantic, Eighties’ glam was an important theme for spring. And few did more appealing variations on it than Donatella Versace, which isn’t surprising, since the Eighties were a very Versace decade. Her slick, stylish collection featured models in French twists and such looks as strong-shouldered jackets over short, tight skirts, worn with wide power belts. Here, one example: a white patent top and skirt that would have delighted Krystle Carrington.