What Should I Wear Saturday Night?

This weekend, as mentioned previously, my fab bridesmaids are taking me on a weekend excursion to a mystery location. I have been told to bring a bathing suit, a cover up, a Kindle (I don't have one but this might be the perfect excuse to buy it finally), cute outfits, and then something for going out on Saturday night to dinner, drinks and a show (WHAT KIND OF SHOW?) that is dressy but not too dressy because we are going to be in a beach town (WHERE?!). I just found this out from Jess.

I need your help. Below, I have created two outfits to pick from.

The first is similar to what I was originally planning on wearing but I think it might be too dressy:







Maybe I should do something more like this?


 
I'm thinking option two, maybe with dark skinny jeans. Knowing me, though, I'll go for something totally different last-minute and this will all be moot.

What do you think? Option 1 or Option 2? Or something totally different not listed here? Feel free to go to Polyvore (where I created these outfits), make one yourself and post the link below!

By the way, Polyvore is like making collages when you were 12 but EVEN BETTER. I love it.