Baby shower outfit opinions!

Paige • 18 years old. First time mommy! 💙11-11-16💙
I've been debating between which dress I should wear to my baby shower. I'm also thinking about possibly going out and trying to find a different (hopefully cheap) dress to wear that I really like. 
This is one of the options. 
And this is the other. The black is a little tight (as you can see) but it's also comfortable. But I'm not sure if it's too short. 
My baby shower is this Saturday so I really need some help picking out a dress. Any sort of opinion helps, even if it's you thinking that I should get a different dress.