Katie is like
Betty - they are pronounced as though the "t" is a "d" where I'm from. While the spelling "Kaydee" addresses this, it's just too cutesy. The main character of the movie Mean Girls is named Cady. I don't know that that's much better because I think she gets called Caddy like a golf caddy by the principal or a teacher. There's also the initial way to deal with it like K. D. Lange. Just easier to avoid the name altogether! haha!