Well, if it's a lizard woman then she already is a mixture of mammal (human) and lizard - why shouldn't the secondary sexual characteristics be more on the human side?
Yeah, they do. Females are larger and in my experience a bit more aggressive across many species, bearded dragons have sex defined coloration, geckoes are one of the easiest groups to determine sex imo considering the males have nearly external testes and larger, broader heads
What I wanted to say was: if it's a lizard that shows human traits (speech, walking upright, tool use, human intelligence) why is it bad to add more human/mammal traits like breasts?