Rent the Runway Dress for Miami

Our Miami trip is less than three weeks away so I'm trying to decide what to wear over our two nights there. I'm thinking about having some fun and renting a dress from Rent the Runway--I always feel better in a "new" dress and I figure that way I won't have to pack much at all.WHICH DRESS SHOULD I RENT? I've got it narrowed down to four and I would love your thoughts about which dress to