Cute outfit! Glad you wore your dress. It's always fun to wear something new you're excited about.
My DH and I can eat the same thing and I will get sick.
It's worth noting what you ate, so if it happens again you can see if there is a pattern. Some foods it took me years to figure out because it depended on quantity, if they were lightly instead of completely cooked, etc.
I hope you are feeling better.