How to "wrap" a model around geometry

[mrcluster]

I'm currently trying to make an Imperial Mudtrooper by editing the stock AT-AT Commander model. The first thing I'm doing is adding EP3 Anakin's "skirt" to him.

Hidden/Spoiler:

(Hidden due to very large image.)

Now, as you can see, the skirt *definitely* doesn't fit around his belt, which is where I'd like to attach it to. I'm curious; how could I, after moving it forward a little, "wrap" or "shrink" the skirt model slightly to get it to fit around under his belt/connect it to the hip geometry?

[Marth8880]

You want the Shrinkwrap deformer.

[mrcluster]

You want the Shrinkwrap deformer.

Is there any way I can make specific vertices the only geometry affected by the deformer? Currently, when I apply the deformer it just pushes the whole skirt model against the officer's pants, when I'd just like the top circular "rim" portion of it to be connected to the bottom of his belt - i.e., the first top row of vertices.

[AceMastermind]

Yep, you can just shrinkwrap a selection of points instead of the whole object.