Prom Outfit Competition
Get the kids together and let them rummage through a huge trunk of old formal clothes. Oftentimes, these clothes are available extremely inexpensively at local thrift stores. Ask the children to find outfits they think would be suitable for the prom. Award each child a prize based on her outfit. Prizes could be given for best outfit, most colorful outfit, most unusual outfit or other categories.
Hairstyles Show
Once the kids have had their prom outfit competition, invite them to participate in a hairstyle show. Provide wigs or some hair supplies so that they can try on different hairdos. They might enjoy trying to braid their own hair or copying an up-do from a magazine. Once their hairstyles are complete, take pictures and decide who gets a prize for best hair. There can always be more than one winner if the kids are having trouble deciding.
Makeup with a Twist
Help the kids to get their makeup on for the prom, but do it with a twist. Provide inexpensive cosmetics and lots of supervision. Blindfold one child and have her try to carefully apply makeup on another child without looking. See who does the best job at blindfolded makeovers. Any mistakes in the makeup can be corrected after the game if the children prefer.
Prom Dinner and Dance
Once the children have finished all of their fun and games, treat them to a mini-prom dinner and dance all their own. Provide a dinner of their choosing and put some children's music on in the background. Once they have finished eating, they can dance to their hearts' content.