AceShowbiz - Halloween, also known as All Hallows' Eve or All Saints' Eve, was originally celebrated by Christians to remember the dead, including saints (hallows), martyrs and all the faithful departed. Over the years, however, it has turned into a secular tradition that is marked with trick-or-treating and dressing up.

While horror and supernatural characters are commonly associated with Halloween costumes, people usually also draw inspirations from other popular culture works like movies, TV shows and music videos. So wide the selections is that the line is now blurred as to what is considered acceptable and what is inappropriate.

Whether it's done intentionally or not to gain attention, some Halloween costumes sparked controversies as soon as they were launched in stores. Thus, before you pick which character you want to dress up as this year, here's a few examples of Halloween outfits that you should not wear to avoid offending others.