R.N.
We have had the children perform a play when it is a small group, or a fashion show with a larger group. 12 is probably better for a fashion show. You could incorporate the photo shoot in with the show. I have 3 girls, 5, 10 and 13, and my older two help out with the 5 year olds parties. We have also done beaded bracelets and decorated crowns and wands. My daughter went to a party where they dug for jewels in the sandbox. Games where there is one 'winner' at that age can cause hard feelings, b/c someone usually ends up not winning anything, even if you plan it so that you think you have enough games for eveyone to win something. Really anything girly you can think of will work. Have fun!