I looked into the origin of the term "catsuit" but still don't fully understand it. While it seems to refer to a tight-fitting bodysuit, it feels somewhat different from a standard bodysuit. Recently, I think it's commonly used as a sexy, active outfit, much like comic book Catwoman. Women in catsuits often play action heroines who constantly find themselves in life-or-death situations. This makes it natural to photograph them in dynamic bondage poses, even when tied up. Such scenes create visually dramatic and highly appealing images.