"Soulslayerzx" said ...Kind of a necropost, but here's my two cents: Pretty sure they just manually edited the meshes. In 3ds Max, you can just select the vertices you want, enable soft selection, scale them up and make adjustments to the shape where necessary. Question: Are these pictures by any chance made by Rebbacus or Maxofs2d?
I think they might've selected the faces/polygons that the bones of the respectively: breasts and butt control and then sized them up, it could've been sized up in gmod with the resizer tool, and alas photoshop. This may also be a shapekey or flex that was in sfm. Or of course infinite possibilities.
"Ganonmaster" said ...Nope, person who made this using anonymous tumblr account to post this stuff.
Question: Are these pictures by any chance made by Rebbacus or Maxofs2d?