Seventeen is an American magazine for teenagers. The magazine’s reader base is 10-to-21-year-old females. It began as a publication geared towards inspiring teen girls to become model workers and citizens. Soon after its debut, Seventeen took a more fashion and romance-oriented approach in presenting its material while promoting self-confidence in young women. It was first published in September 1944 by Walter Annenberg’s Triangle Publications. Go back to all fashion magazines.