The makeover stations are always a HUGE hit at that age - fingers toes and glitter are what it's all about. You could have barettes and bows for their hair too.
We also have done trivia - so you can have a bunch of questions prepared ahead of time with small prizes (candy, rings, stickers etc) and then have someone in charge of asking the questions "where country is Justin Beiber from?" "what was Miley's original name?" etc. The girl who gets it right gets a prize, but you can do it all afternoon in bits and pieces.
You could also have a 'find the info' hunt. They have to find out info about EACH OTHER - ie find 2 girls who were born NOT in our city / find one girl who went to Kindergarten in another state etc. The first girl to get her card filled wins a prize.
One year I snapped a pic of all the girls and then printed out 4x6 prints on the computer. They each had a frame and they docorated it with supplies at the table - that was part of their take home goody bag.
Good luck - what a fun age!