Yours Turly, Shirley is a children's novel written by Ann M. Martin, published in 1988 and involving dyslexia as a theme.

She ends up struggling with feelings of inferiority and fears of disappointing her parents, especially since her older brother is intellectually gifted.

When a mix up results in the possibility of having a slightly younger sister instead, Shirley becomes excited with the prospect of being able to teach and help someone learn how to speak English and help educate her about the American culture.

When Jackie ends up excelling in school and moves from the regular third grade class to an advanced one, Shirley begins to feel threatened and jealous.

When she stops making an effort at school, an unexpected challenge arises in the two sisters' relationship and forces Shirley to come to terms with her role as Jackie's sister and beginning to understand her own strengths.