My Daughter`s 13th Birthday Party

For my daughter`s 13th...she is having an elegant "girls" party. She has invited 8 girls over for hors d`oeuvres and "before dinner drinks"....a limo will pick up girls and take them to a restaurant for dinner (My husband and I will follow in our car), and then they will come back to the house for "after dinner drinks" and a sweet table. I`m stuck on a great favor to go with this elegant themed party. HELP!