No Mirror Makeover
Gather all of the tweens in a sitting circle. Hand each of them a set of makeup items, including lipstick, eyeshadow and blush. When you say "Go," the girls all start to put the makeup on their own faces, without the use of a mirror. After about five minutes has passed, pass a mirror around so everyone can see the jobs they did. Have the girls vote on the best and the worst no-mirror makeovers.
Makeup Match
Gather up as many makeup items and papers bags as you have players. To play, you have to have two of every type of cosmetic. For example, two lipsticks, two mascaras and two blushes. Place every individual item in a separate paper bag and give a bag to every player. After the teens have gathered in a circle, pick a player to choose someone out of the group to quickly reveal the item in her bag in an effort to match her makeup with someone else. If she successfully matches, she gets that player's item and another turn. Otherwise, another player gets to go. The player with the most items at the end of the game wins.
ABC Fashion
Write out each letter of the alphabet on separate index cards and place them all in a bowl. Divide the players into teams of three. Each group picks out three cards. When the game begins, the teammates all have to locate three clothing items for each player that start with the letters given. For example, if you get "A," "B" and "F" you can use an ascot, a bikini and a fedora. The first team to find all three items for each player, they win the game.
Quick Dress Up
Gather up several clothing items the tweens can put over their clothes and divide the clothing into two piles. The piles both need to have similar items. For example, Pile A needs to have a coat if Pile B has a coat. Divide the tweens into two teams and line each team up behind a pile. When you say "Go," the first players put on one of the clothing items and take it off, handing it to the players behind them. The first team to have all its players try on and take off all of the clothing in its pile wins the game.