Wedding Wednesday

This is a bit of a different Wedding Wednesday. It's more of a cry for help than anything else, really.

You see, one of my cousins is getting married this winter, and it's going to be a rather fancy evening wedding in Manhattan. And I'm feeling a little underconfident about what to wear... I haven't been to a dressy event in ages.  Not since my own wedding, I think.

The dress and shoes are pretty much set, as I've already bought the dress (on sale, holla!) and the shoes are quite similar to ones I already own. Not spending money, holla once again. I just need some help deciding on accessories.

Here's the dress:

Penelope and Odysseus dress, from Shabby Apple

And some shoes that are similar to the ones I already have:

Patent leather heels, by Michael Kors (again, not my actual shoes, but if you like 'em they're on sale at Zappos)

So here are the accessories I'm considering, from top to bottom:
Silver lace necklace, by BranchBound
Black lace bracelet, by BranchBound or...
Vintage collage bracelet, by Tatty Chic
Embroidered oak leaf headband, by Faerie Market


Kat ruffle shoe clips, by PixelandHank (I think I'd wear these on the ankle)

I don't think all of these together would be great (too overwhelming!), but I like them all. What do you think? Any other accessory suggestions? I spend most of my days in pjs or yoga pants and my sense of style is not doing well. Please help!