One of the strangest things I've seen is a woman running in a strapless top recently. Usually, the women runners I know don't go strapless. It was a very risky move but she kept them up :)
Yoga pants, iPod, fitbit, the whole lot of it.
It's the same when you see girls in strapless bikinis actually swimming in them vs. just tanning. Mad props to having the girls stay up! #riskybosoms