Looks like it , since it looks so different from jojifuku , jojifuku is colorful while this has pastels with a certain color scheme

That's just someone cosplaying as japanese little girl wearing the official kindergarten headwear, uniform, and randoseru in the second picture whereas a lolita outfit is worn in the first while keeping the colors of the uniform.

Here in Japan people usually only dress like this as part of ageplay fetish.