Costumes or Clothes?

Sunday night, the night everyone was either headed into a sports slumber, award ceremony land or prime time show night, in a far, far away land, celebrities were sighted on Sunset Strip. I can not figure out if they were on their way to the AMA's or coming from them, but I am most certain, that if this wasn't a special day, PCD or Paris Hilton, wouldn't be caught dead, in this get up??? What do you think?