This document summarizes key points from a book that examines how heterosexuality is institutionalized through traditional white weddings. It discusses how weddings serve as a major cultural site for understanding how heterosexuality is organized. The book analyzes how the wedding industry promotes and naturalizes heterosexual norms. It also explores challenges to institutionalizing heterosexuality, such as feminism and LGBTQ rights movements, as well as how Jacques Lacan's concept of the imaginary is applied to understand the "heterosexual imaginary" that presents heterosexuality as natural and taken-for-granted.