A Dress for the Engagement Party

During fourth of July weekend, we are having an engagement party. It's nothing fancy, more of a big family get-together. There were no formal invitations, and we're basically just going to show up and eat with our immediate families. But it will be the first time our families meet, and I will be seeing 30 or so relatives of the boy.

So I thought I'd spruce myself up a bit. Y'know, something that says, hi, I'm going to be related to you soon, you can rest assured that I can dress myself properly and modestly.

I went to BCBG, J. Crew, H&M, and Anthropologie.
I didn't find anything at J. Crew (it looked like they were switching seasons) and nothing at H&M. My best stop was at Anthro.

I worked at Anthropologie last summer as a second job to make some extra spending money, but it turned out I basically worked for clothes! It kills me a little buying things there post employee discount, but what's a girl to do?

Here we go...

Dresses at Anthropologie:

1.

[I love yellow, but don't have anything in this color. I also really liked the detail--sorry, that eyes sore is the camera chord]

2.
[Red is a lucky color and will most likely please our more traditional relatives.]

3.
[This dress is by Corey Lynn Calter, a designer I love! The dress I wore for our engagement session was by her.]

4.
[50's inspired polka dot number! It's fun, but I can see my new relatives doing a double-take when they meet me. This is a sales rack item.]

5.
[This is a fun bohemian dress! Not sure if the halter is the most appropriate, I might have to wear a cardigan. This is on the sales rack.]

Dress at BCBG:

6.

[This fit well, and it had pockets--score!]

Which one(s) should I buy for the party?