I've shared those in another thread about the game before, but i've made some modified outfits for the game.
They replace the clothes on the model during the dialogues (not in the menu).
I've also remove rinko's pubes, add the tatoo from the brothel on base model, and tied her hands in her back, all on different models.
To use them, rename the files in the archive with the names of the outfit you want to modify and replace the files in "Endless Summer\www\img\pictures" (you ll find the name there as well for the renaming part).
For outfits that come in several parts, simply replace each corresponding files. For outfits that come in a single part, replace one of the file and edit other parts of the same outfit by making them completely transparent (either erase everything except transparent background or just set opacity to 0).
Don't delete files or the game will crash.
Save the original files in a backup folder before replacing them.
Hope you'll enjoy them.