Sweet 16 Gangster Theme

Im turning 16 in September and Im having a themed party, well I was going to do Cinderella but I changed my mind I want something that fits me and mostly my family. So I decided on "Gangster Theme" just like the 1920`s where everyone was in the mob and all that I love it, I love the food, the wardobe everything but Im not sure how to incorperate it with a Sweet 16. Its gonna be about me that day and Ill have an escort I want him to wear a zoot suit and I want to wear a white dress and everything. But I need some help on decorations,invations,everything PLEASE HELP ME QUICK!!!!!!!!!!!!!!!!!!!! TY