Before purchasing a model there's a "Get her nude" popup, often with really nice photography work. Here's an example: (I don't have option to upload an image, so I uploaded it here with wholesome censorship https://i.imgur.com/mHH63oa.png)

After purchase there's no popup anymore. Where do I find the popup photo after purchasing?

Thank you and God bless.

@OboistForjesus

The image that is usually shown in your image is a PNG file.
This file is located in the "data" folder in a subfolder with the CardID.
By default, the "data" folder is in the iStripper folder.

In your example it is:
CardID: e1325
File: data \ e1325 \ e1325_nude.png

###

But it is also possible to look at the photos on this card.
To do this, click on the card - but not on the buttons.
Then the info page for this card opens.
Now click on the camera icon.