Show your...support for our Derrieres.

[Shioban]

As to butts... Seriously it's not like we had huge badonkadonks before and placing the models from 1.0 and 2.0 side by side the difference is so slight that you have to start measuring pixels which is just... You're weird. Stop being weird.

Newp. It's significant enough for people to notice.

So clearly it's an issue. (Albiet VERY minor and cosmetic)

I'd just like to point out that SE programmed a breast size slider into the game.

If they've got the time to waste on that, why haven't they got time to waste on something equally trivial and aesthetic?

Yup. It's called a mesh-deformer, can be applied to any weighted area of a skeleton.

Weight are essentially the influence a skeletal bone has on the 3D surface of an object.
So the skeleton is layed underneath, the 3D mesh 'skinning' tothe bones and then the process of painting the weights onto the model begins.

For example, here's what a skin-weight looks like;