Gone are the days of little kids dressed up as ghosts and witches parading up and down the street in costumes made by their mothers. Traditional and homemade costumes are out the window and have been replaced by store bought costumes ranging from cartoon characters to celebrities. This Halloween, it has been estimated that American parents will spend a total of 1 billion dollars on costumes for their children. And if you thought dressing up for Halloween was an activity for the kids, think again. Adult costumes are more popular than ever with sales expected to reach 1.2 billion dollars this year.