I have a pet theory that not having sufficient children is whats fueling the "botox-cougar" syndrome.

I think that at a deep biological level, these 47 y/o botox cougars[1] realize that they don't have enough (or likely any) children. Thus, the biological urge to "appear attractive" in order to attract a mate goes into overdrive and results in them having enough botox and plastic surgery that borders on body dysmorphism disease.

[1] - yes I realize they are past menopause, but probably doesn't matter to the part of brain that is still fueling the 'attract a mate' behaviors