Proposed breast comparison chart for Ranma 1/2. Although to be honest, in the manga, they seem to have consistently the same
Ranma ½ - Ranma Images, Page 45
Season 3 Ranma Pics
Rereading the Stack: Ranma 1/2
One Moment to Love, Ranma Wiki
らんま 1/2
らんま 1/2
Ranma ½] Be Careful What You Ask For (Edited for Rule 11) : r/Animemes
Ranma
Diagram of Romance in Ranma by magasantos
Substancial, PDF, United Kingdom