It's not that she's "fat", it's that she's perfectly average in a low rent sort of way. She can hold out for rich guys all she wants and good luck to her - rich guys can do way better than her. So I can only guess that she has an agent who directs her to put crap on Tik Tok, he plants the story in some news outlet, and humans all like, "Meh! She's not so hot!" Presto! Instant celebrity.
It's a non-story that became a story because the media told us to care, and we do as we're told. I loathe that manipulation.