Help! Which dress should I wear to a December wedding?

I need a little help from the blogging community.  I am totally torn abut which dress to wear to a wedding next weekend!  I decided to rent something from Rent the Runway.  I have some credits burning a hole in my pocket.  Obviously, I have settled on navy blue and shiny....but beyond that I need some help!  Vote below!

UPDATE: The clear leader, Dress #2, is all sold out for my requested dates!  Darn!  So help me chose between 1, 3 and 4!

RTR Dec 2014 by veggielawyer

Disclaimer:  I am in now way affiliated with Rent the Runway and was not paid for this post. I may, however, received credits if you rent through my affiliate link.