Please help what to wear.

Of the two I'd probably wear the second. It's not as bold. I personally think neutral dresses without a bold pattern are the best option.

The second one seems nice without being too bold, which might be good for a diverse crowd. You could ask your cousin's parents if you think there is a preference on their part.

I agree with the previous posts. The second dress would be the best, in my opinion as well.

I'd choose the Zimmerman for the quality and color. Cheetah print with its ombre color scheme and smaller pattern print is rather neutral. If you have tanish skin, this would look especially pretty and more ladylike with the shape. The second dress has a pattern that's a bit too garish for me like repeated giant 🌻. It's a bit basic. I, myself, wouldn't wear black to a wedding unless I expect the hosts to throw a bland evening, then I wouldn't care too much.

I would go with the 2nd one! I love that style and patern

Did you find something that meets your style? If this even happened, hope it worked out well.