The first one looks much much better! The fact that the necklace matches the shoes just makes it match perfectly and it definitely makes you look mature enough. And I also like the fact that your link says bitchfucku in it lmao
The strappy sandals look a lot better, the second pair are not my favorite and they don't match very well. I think the dress and the necklace look good for a wedding. The outfit does not look too young.
I say go with the first outfit as is. Looks great :)
The dress is fine, stick to the strappy shoes. :) You look nice!
The dress and necklace is adorable and it looks great on you! The 1st shoes are maybe a little young but the 2nd are old ladyish and UGLY
no not too young, shoes ok. both depending on your age