Precisely.

If a bunch of aliens were to start capturing bunch of humans (and other terrestrial animals) for food, or slave labour, or what ever, it would be rational for males to go after the aliens with sexy human females first. The torn clothing would likely be widespread, and selection by torn clothing (as torn clothing improves ability to select for sexiness) may also be rational when one wants to maximize the sexiness of mates that one takes for rebuilding the human race. :-)

edit: One should also look for signs of struggle (such as torn clothing), as one would be interested in the relevant genes for the successful counter-attack by the next generation.