From the author:
Subtitle: Hitman's disguise system has always been kind of strange, but it's even more off-putting now the developers have tried to throw a little realism into the mix. If you dress up as one of the multitude of bodyguards scattered around a mansion, every other guard will recognize you as an impostor, often from ludicrous distances.
However, no one seems to notice that the household's ONLY chef has apparently grown eight inches taller and developed a severe case of Vitiligo.