Have everyone come dressed in their version of a Lizzie Mcquire outfit. Do makeovers on each other. Sing karaoke and make sure everyone participates by picking their name from a hat. You can include song titles in a different hat and they can pick the song that way. It will be fun trying to see them try to follow the songs they don't know. Make a scrapbook by having each girl decorate her own page with the Lizzie Mcquire them in mind. Have a polaroid or digital camera at hand to print the pictures and include them in the scrapbook. Order pizza (cheap). For dessert have the dining table setup with everything you need to make a super sundae (hot dufge, caramel, nuts, cherries, whip cream, gummy bears, crushed oreas, chocolare sprinkles, raisins, etc.) Make sure someone is viedo taping this so you can watch it later at night before bed. Also, have everyone bring their favorite slippers. Make sure you give awards or prizes for each thing you do (Best Makeover, Wildes Outfit, Biggest Sunday, Best Lizzie Imitation, Best Singer, Best Dancer, etc). The gift can be a lipgloss, nailpolish, inexpensive earrings.