Apropos of nothing in particular:
The word "sexualize" means to apply a sexual lens to a person who didn't want to be treated or perceived in a sexual way
The word "objectify" means to treat a person as an object
It is impossible for a person to "sexualize herself" or to "objectify herself"
Therefore you can safely, immediately dismiss anyone who's talking about this or that woman (it's almost always a woman) "sexualizing herself" or "objectifying herself"