What are some fun tween sleepover games for a group of 4?

It really depends on what the hostess/guests are in to but a couple of good ones are the old standby Truth or Dare. It can be brought into the modern era by using Truth or Dare Jenga or www.tordol.com. You may want to set up the game yourself as the adult because it is for all ages including adult questions that could be inappropriate for younger teens but you can set it up to not show those questions. They actually even have a "Classic Slumber Party" option that shows only G-PG 13 rated questions and is made for an all female group. The site states in part... "This list is designed for young, all-girl slumber parties and features many of the "classic" truth or dare questions that have made this game popular over the years. Truth questions range from silly things to your first kiss and current crush. Most are designed to encourage discussion or stories. Dares are funny, messy, or a little bit embarrassing, but nothing that your parents would get too upset about. Just make sure you do the messy ones outside! : )" Anyone who really likes this game/site can even subscribe for $25 to $50 per year and it lets you do a lot more with the site. Other games could be the DVD trivia type games based on what they are interested in. Scene it, makes many versions. Just a couple ideas for you, I'm sure there are MANY others.