That is a big popular "anime fashion" trend in Japan -- cartoonish, costumey clothing. It is creepy "pedophile chic" that they even call "Lolita" over there -- grown women trying to look like schoolgirls or Barbie dolls. Maybe Ivanka thought that ludicrous short skirt and boob-disguising top would appeal over there; but I wish she had better represented U.S. sensibilities.*
Japanese Street Fashion - 10 Things You Need To Know in 2016
*(I know, ripped jeans and a fat-forgiving big T-shirt, right?)
Looks like “clash day at middle school”
That is why so many Japanese men are virgins.