My 15th B-Day

For my 15th bday party i was planning on a vegas themed pol party. The colors will be pink, black, and silver. I have almost everything set for decorations, but i need help with favors. I also need help with the dress code for after swimming and going out somewhere...idk where yet tho. I need suggestions on the type of dress/shoes i should where and how i should do my hair. My party will be in either august or sept. So suggestions by then would be helpful... Thanx