This happened to me last night.
I live in a neighborhood in one of the suburbs of Rome. Olive trees in the backyard, space between the buildings. My bedroom is on the second floor, with a balcony. Beyond the olive trees, in the next yard, kitty-corner to my house, and at a lower level, lives a family with a daughter who has just graduated from high school.
Of course I have tried to observe her in her room, but I'm at an angle; all I can see is a corner of her room, which is where her desk and her computer monitor are. I've seen her sitting at her computer many times, usually with the lights off. That girl spends too much time in front of that screen, watching movies or TV shows. I'd never seen her watching porn.
She's a big girl, tall and solidly built, not slim, with full breasts, that much I have been able to see, but no more. I've spied with binoculars and a 50-power telescope, but only once did I catch her undressing in my angle of view, and only for a second or two, and just to bra and panties. I'd never seen her out on her balcony, though I'd seen the bra and panties on the family clothesline. I'd been observing her, just checking on her, really, for six months, since I'd moved in, but without much to show for it.
Now that school is out, she'd been away somewhere, but last night I saw that she was back. Her computer was on and she was seated in front of it. It was 1 a.m. and hot. She was wearing a nightie I'd never seen before. It was thin enough to reveal the curve of her breasts (of her right breast) against the bright square of the monitor.