On vacation in Australia we stayed in a hostel but with our own private room.
My wife never wears panties when sleeping ("the airflow is good for my pussy"). That night she wore an old oversized white t-shirt just covering her buttchecks when standing. The shirt was of very light fabric and used for a lot of years so it was quite see-through.
At 6 am the fire alarm suddenly wen't off. I was pretty sure it was no big deal but my wife is always very worried about possible fires so she just grabbed her sandals and dragged me outside.
Standing outside in the surprisingly cold morning, no fire in sight, she slowly realized her situation. There she was, standing on the street, in a short see-through shirt with her nipples almost piercing through and no panties on, her pussy and ass barely covered by the t-shirt.
Slowly more and more other guests came out. I really enjoyed the sights because most women only wore thin shirts and their nipples and tits were clearly visible through them.
After beeing ashamed at first my wife just accepted her situation and we had a nice chat with a few other guests. Especially one guy had a hard time looking her in the face instead of her tits
When the alarm wen't off we all went back inside, we waited untill most guest were gone and I tried to walk the stairs behind my wife to give her some cover. The guy who enjoyed her tits a lot apparently realised she had no panties on and positioned himself just right to get an excellent view of her ass and pussy.
Great start to the day for him