In a 21st-century Halloween, what could be more fitting than a 21st-century costume? Hopefully, your answer is nothing because 21st-century renditions of costumes are easy to pull off last minute. Here are the easiest of them all:

PREVIOUSLY NOT IN THE 21st CENTURY:

Dorothy from 'The Wizard of Oz'. All you need is a simple sheer white blouse, a blue dress, a pair of plain white socks and some red shoes. Wah-lah! It's like magic.

Snow White from 'Snow White and the Seven Dwarves'. As long as you look warm and have contrasting white and red clothing, anyone can pull this look off!

ALREADY IN THE 21st CENTURY:

Velma from 'Scooby-Doo'. A plain orange jumper (or orange infused), a pair of glasses, a red skirt and a pair of red shoes are all there is to this outfit.

Kim Possible from 'Kim Possible'. This look is extremely versatile, as long as you have a plain, black, long-sleeved t-shirt and some cargo pant's, you're set.

- Snerfy