Unfortunately for Greer her chest size affects pretty much every single aspect of her life, limiting the activities she engages in and shredding her self-confidence. Her breasts are ever present in the novel, whether you want to repeatedly hear about them or not - which is probably part of the point of the author - to remind you that for Greer they are ever present and life consuming. I'm definitely rooting for her to find herself even if others can't look past (or above) one part of her!