This was an earlier version of my most recent picture, with more story-appropriate tights. The full-resolution version should be available on DeviantArt.
There was meant to be a story about the assistant snapping a photo of how hard the girls trained on the day, and had it framed, and how the girls did so well that nobody needed any spankings that night (though, the next morning - after two girls had been denied diaper changes - was a different story).
edit: You know, those diapers really don't seem thick enough still. ;)