Name a time you were happy for accidental nudity

One day, decades ago, when I worked at a government office and one of the women I worked with came in wearing what looked like a men's double-breasted suit -- but with no shirt or bra underneath, just the suit. A fashion statement, I guess, but anyone sitting to the left of her was constantly being flashed by her bare breast as the coat sagged open constantly. Made for an unusual work environment that day.

Sitting on my hotel balcony and a woman nearby tries to change out of a swimsuit with a towel round her and after a few minutes of failure gives up and decides to drop the towel altogether!