Which of these dresses is most age-appropriate for a family wedding?

I'm going to a wedding and needed a dress. Not happy with what I own,. bought these because they were on sale. But now thinking of it, I thought maybe they are not appropriate for me. I look younger for my age, I've been told, but I don't want to look ridiculous or try to look younger. The wedding is at my cousin's home, and feelings there can be a bit old fashioned for women. The women there have old fashioned ideas on what a woman my age can wear. So, I got these and was going to wear a short black sweater/cardigan over the second dress. Both dresses flare out. The last one caught my eye, and I'm able to return the other two. I like the strange sleeves on that one. What do you think?

Which of these dresses is most age-appropriate for a family wedding?
Which of these dresses is most age-appropriate for a family wedding?
Which of these dresses is most age-appropriate for a family wedding?
Which of these dresses is most age-appropriate for a family wedding?
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