"Ever since the earthquake, I've been trying to do my part to help the people of Haiti — and I wanted to do more," Cyrus told People about the eBay auction, in which fans can bid on the Herve Leger dress she wore to the Grammy Awards last month, as well as two tickets to the Hollywood premiere of her upcoming film, "The Last Song." "I want to get people involved and show that even the little things you can do can make a difference."