Madonna

When: 1984
What: Became a style icon. Madonna's debut album came out in the summer of 1983, and as she began appearing in videos, interviews and photo shoots in her signature bracelets, see-through shirts and heavy lipstick, teenage girls worldwide took notes. On her first tour, she recalls, "Girls had flap skirts on and tights cut off below their knees and lace gloves and rosaries and bows in their hair and big hoop earrings. I was like, 'This is insane!' "