[truculent]

It is possible I am overreacting. However, I think there are is a key difference between this and your example.

A male bodybuilder, specifically, has chosen to flaunt their muscles. There is an element of control and consent to the objectification of those muscles. While pop stars obviously use their image, too, the fixation on breasts feels different to me. It is not something that the artist has invited . It reduces Spears to her physical attributes, rather than engaging with the image she has put out. It places the viewer first, not Spears.