MILAN — Guys dressing gals is nothing new. Most designers are men. But when the tables are turned for menswear, get ready for surprises.

Italian designers Miuccia Prada and Gucci’s Frida Giannini — who fall into the rare category of women who design both the men’s and women’s lines for their labels — could not have more different ideas on the subject for the Spring-Summer 2009.

The Prada punk and the Gucci guy have little in common. Take the music as a starter. Prada sent out theatrically made-up youths, all but tiptoeing down a wooden runway as classical music played in the background during her show Sunday night. The Gucci man on Monday, however, sauntered down a mirrored runway to blaring rock music.