Got the camera my first day, I picked up $30 bringing me to a total of $60, spent the next 7 weeks grinding through the girls and not once has the the words 'photoshoot' or 'modelling' come up; even after 2-3 pool sessions with most of the girls. Even wound up searching the whole thread, repeatedly trying to find out how it's started and the closest anybody has come is mentioning they've done x number of shoots and can't start more. So just saying "the sooner you can start doing shoots" isn't at all helpful mate
Here's a MAJOR game-breaking bug... as a test to try and see what I missed and maybe finding the start of the modelling/photoshoots on my own I went back and restarted my game. First day after helping Katie look for her earring (and looking up her panties), I went around the house and picked up the 3x $10 bills Katie left and did NOT go driving looking for the pizza place. Day 2, you are no longer able to take the car to go looking for the pizza place and therefore you hit a literal Game Over on day 2 because you can't search for the pizza shop, which means you can't trigger any other location or person in the game. You can use the map to go to the park or go home at that point, there is no "look for pizza" option after day 1.