I love this casual combo. The jean jacket easily completes this outfit, however, it looks super cute without the jacket as well. It is such a light/easy dress for summer. I am always looking for dresses like this for the hot weather. it can just be thrown on and ready to go. I love being comfortable but, I also want to still look like I tried. If that is what you're into as well then you and a dress like this will get along perfect!
Here are a few similar dresses & jean jackets. all 4 dresses would be comfortable and easy for a casual day/night.
(click on pictures to forward you to the site to buy from)