This, That or This Other?

I have a wedding coming up at the end of July and I am SO excited about it. So many friends that I haven't seen in agesssss will be there and it'll just be a blast. I'm having the hardest time deciding what to wear, though!!!

The wedding is cocktail attire, so naturally I turned to Rent The Runway. However, that wasn't the best decision for me because I narrowed it down to about 80 dresses...and unless I'm going to be making a few costume changes, that's not a feasible option.

So, since I've been blessed with such indecision, I need all of your opinions. I did manage to narrow my 80ish choices down to a more manageable 3...but can't decide between the 3, which is where you come in!

Thakoon In A Daisy dress: I love the unusual pattern, the intricate hemline, and the cut...but the open back makes me a little nervous.

Shoshanna Lace Ceclie dress: A totally different color and style for me and I hardly ever wear lace. It would be so gorgeous with gold accessories, but it might be too short...

DVF Mint in Manhattan dress: I haven't been able to get this dress out of my mind since I first saw it. It's so unusual but still fun. But how would you accessorize? Nude heels seem a bit blah, but nothing else would really go...

Or, just to throw a fourth option out there, should I wear a cocktail dress I already have and invest in some fun new accessories? Help!!

just to clarify, this is not a sponsored post :)