Late and gay but look at how wide that side-split on her top is in ButterMyMuffin's screenshot. It's literally near bursting and it's meant to be a kind of "fashionable" cut, not to just let it fit over your ever-expanding belly, gunstress.
Also, I was bored. Idk, she's evolving or somesuch. Maybe to hoover up items off of plates easier without having to stand up or even use her trotters which will soon become so beastly that it'll be like eating with hooves. She'll have to root around in food like a hog instead of using opposable thumbs. Or something.