I was really thinking about her style recently. Actually, I was analyzing her style for ages to figure out what drew me to her old content. I think the reason she wears oversized clothes is to cover up her pretty large chest. You might have not noticed but she has a pretty big chest for a person her size and she might feel concious about it, so she hides it with oversized clothing. Also I think she threw on a bit of weight before starting training a couple years ago so I think she was also feeling self-contious about.
I liked her old videos because she was ready to experiment like someone mentioned. But in hindsight I also notice how it's basically all trendy stuff from 2010's like those aweful litas. I think my young impressionable mind was blown away by the staff she could afford. I could only dream of getting so much stuff for birthdays or even as regular purchases from mom.