After years of thinking about this issue, and inspired by a comment on Twitter about omniscient breasts, I have finally written a post on the male gaze, the female gaze, and sexualized women in fantasy and science fiction novels.
Imagine a female pov character is going along about her protagonist adventure, seeing things from her perspective of the world as written in third person. She hears, sees, considers, and makes decisions and reacts based on her view of the world and what she is aware of and encounters. Abruptly, a description is dropped into the text of her secondary sexual characteristics usually in the form of soft-focus Playboy-Magazine-style sexualized kitten-bunny-I-would-fuck-her-in-a-heartbeat lustrous-eyes-and-nipples phrases. Her breasts have just become omniscient breasts.