Kylie makes her very first appearence in chapter 1 as the Queen Bee in school. It is revealed that she is the Cheer captian, along with her best friend Jackie. In chapter 1, Kylie is descibed as this very vain person, who is mean to everyone outside of her clique. Later, she, along with the rest of the cheerios, slushie Barbra.
You got something on your face, Nose. Here, let us help you out *slushies Barbra*. All better!