How was this boob deformation achieved?

[Xaqq]

this screenshot is from this follower mod: 

http://www.nexusmods.com/skyrim/mods/83060/?tab=1&navtag=http%3A%2F%2Fwww.nexusmods.com%2Fskyrim%2Fajax%2Fmoddescription%2F%3Fid%3D83060%26preview%3D&pUp=1

 

I want to see if maybe i can make this work on other followers if possible...

[kataura]

it's probably how the armour was modelled.

[idle]

You can do these simple mesh edits with outfitstudio for example.