Seventeen is an American magazine for teenagers. It was first published in September 1944 by Walter Annenberg's Triangle Publications. News Corporation bought Triangle in 1988, and sold Seventeen to K-III Communications (later Primedia) in 1991. Primedia sold the magazine to Hearst in 2003. It is still in the forefront of newsstand popularity among growing competition. This magazine is mostly for young girls and women from the ages of 12–21.