I am searching for a book I read as a young elementary school student in the late 60s but the target audience was a little older, perhaps middle school girls.  I think the book would have been published somewhere between the mid 50s and early 60s. Even in 1969/1970 it felt slightly dated.

Here are some facts I remember:

1) The protagonist was a young (13-15) teen girl and the book may have been part of a series (of either books or movies-not Giget.) Or maybe not.

2) The setting was very much all-American, white picket fences.

3) Our heroine was very excited to be invited to the out of town wedding of her older male cousin.

4) Although I can’t remember the name of the protagonist or her family, the bride’s name was Joan. At one point she shows her mother a picture of a bride in a magazine and asks “Do you think Joan will wear a dress like that?” To which Mom replies non-committally “Perhaps.”

5) Much of the book is about the struggle to find an appropriate dress for our heroine to wear to the wedding.

6) The perfect dress is actually found at a thrift store or among clothes that the mother is collecting for a charity drive, a seamstress makes some adjustments, and she loves it.

7) At the pre-wedding festivities the protagonist becomes friends with a similarly aged girl who I think is the bride’s sister/cousin and who is a junior bridesmaid in the wedding.

8) Unfortunately, they forget to pack the perfect dress. Much sadness ensues.

9) The junior bridesmaid becomes sick and our heroine is called upon to fill in.

10) The bridesmaid’s dress is green velvet with a little velvet toque.

And that’s it, that’s all I’ve got.  I borrowed the book over and over from the library, but the dust cover was missing so I don’t even know what it looked like.  Even though it doesn’t sound like much, I loved it and would like to read it again.  Thanks for any help you can provide!