The 22-year-old model discussed her relationship with the 25-year-old singer Monday on Good Morning America. Kloss and Swift recently covered and shot a spread for Vogue, and the star credited their bond with making her a stronger woman.
"[It's] all about girl power," she said of the cover. "I think we both are very supportive of one another. I think that kind of friendship, whether it's with a sister or a friend, that kind of friendship is really powerful and it's been a huge part of my success."