How Would I Plan A Fashion Show In Which Parts Of The Proceeds Goes To Charity For Homeless Veterans?

I would like to plan a fashion show to donate a huge portion of the proceeds to a charity that helps homeless veterans. Even if this help one family to get into a home I would feel as though it would be a success. But I would love to know how would I go by organizing something like this? I have the budget for this event but that is pretty much it. How would I go by getting sponsors? If anyone have any experience in putting together something like this, please let me know. It would be greatly appreciated.