So, I a dance to go to that I needed a dress from the teens. Last year, I purchased this reproduction of New Idea Pattern 9115:
I found some fabric and the sewing commenced. It took me 2 months to finish due to the hand sewing on of trim. I estimate it took 28+ hours to hand sew all the trim. But, I think it was worth it. It wasn't ready for the dance in April. While I was making this dress, I was gifted a sewing book published in 1917 which actually helped me put the finishing touches on the dress.
The details of construction and many better pictures can be found on my blog. Check it out.