On my daughter's 12th birthday I rented a limo and made up invitations that looked like concert back stage passes I laminated them and attached to necklace cords that said sexy girl on them.
I asked all the girls to dress up as their favorite rock, pop or country star and bring one of their songs. The limo went around to everyone's house and picked up all the girls. As they were coming back I had the video recorder going to catch them all getting out of the limo. As party favors I gave each a pair of funky sunglasses and lipsticks of different colors. The party began with the girls singing to their favorite song with the karaoke machine as I filmed each one. The girls had a blast at the end of the night they all came and watched the video of each other singing and dancing the night away. I had just as much fun planning and watching them as they had and maybe more. It was a great night to remember!