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Saw this model on TF3DM and ported it over to SFM.
How to install:
Extract the zip file, then drag all of the files inside of the usermod folder.
Boobs have jigglebones. No butt though. Her face can be controlled via bones, not sliders. Her hair has bones too, you can control that. Although the model can't be naked, I've still marked it under "NSFW" just to be safe.
Includes an IK rig.
(To control her breast bones, right click the model and go to utilities, then click "Bake Procedural Bones." This will remove the jiggle bones, but you can add them back by going to the same tab and clicking "Enable Procedural Bones.")