HELP

Every year i always have 12 girls sleepover. I`m sortof know for my out going parties. Last year i used my last good theme i could think of, which was the Hollywood theme. I need a good theme for this year. My birthday is in 4 months but i need to start planning now. Some of the themes i was thinking about were
1. Luau
2. Casino
3. Disco
4. Regular Dance
I will be turning 13 and i need a special party. Please reply with your ideas and comments. Thanks