Diives - Mew’s Bra

Diives’ Meloetta……unf~

The more I look at this, the more I notice that the way she's been undressed doesn't make physical sense.
I mean, are her collar and sleeves supposed to be completely separate from the rest? but if that's the case, then, why do they become loose only when the rest of the attire is stripped? Do I actually care? not really, i'm just bored.