In my 2d art I typically draw pinups (and other content in that general arena). When I started learning Blender and wanted to start making my own lithopanes, I knew that these old stock photos of Carlotta Champagne by Marcus Ranum (ranum.com) would be perfect!
The litho is curved enough that it will stand up on its own in front of a light or on your windowsill and the thick border makes it more sturdy during printing and while you're handling it. (I also think it just makes it look nice!)
The author marked this model as their own original creation.