This is my take on a realistic Velma. It's a daz model with shapekeys and all (thus socks clip out, you have to make your own corrections).

I spent a lot of time sculpting a chubby one though but I left *one shapekey* that resets her body to thin version (might having bone placing problems though, careful).

Also, I went with small boobs, but I made *a shapekey for tetonas, it's pretty cool, check it out (do it manually from the shapekey panel, I didn't add them to the UI*).

P.S. You can go to shader editor and switch material for the magnifying glass, to make it work like an actual magnifying glass (by changing the IOR). However, from certain angles in behaves weirdly (for example it cancels the glasses' blue color), so now by default the material is just a transparent one. Same goes for Velma's glasses' lens material.

Bugs etc: https://twitter.com/tvitone1