Satu Hämeenaho-Fox is a Fearless-era Swiftie and author of books about culture. She has written books about many people whose artistry and/or clothes she likes, including Taylor Swift, Harry Styles, Zendaya and Lady Gaga. She has also written several children's books on art and fashion history for New York's Metropolitan Museum of Art. She is the co-founder of the Swiftian Theory newsletter.