I’ve loved my 1815 Tree Gown ever since I made it in 2013 (here is the link to the original post about making the dress) and have worn it many times, most recently last summer for a Regency picnic which I posted about here. It was clear at that point that this dress needed to be updated to fit my current shape!
Making a plan
I finally had the brain space to deal with it this summer (and the added encouragement of wanting to be able to wear it in June). So, accordingly, I dug out the small bit of fabric I had leftover from originally making the dress.
Then, I took stock of what was needed. In a fitting, I realized that not only were the sleeves now a bit too tight, but the shoulders were also not quite wide enough for my now-broader shoulder width, which was also contributing to the dress wanting to fall off of my shoulders. Ugh!
There was no easy way to deal with that second problem except to make the back wider… So, I took a deep breath and decided to replace the back panels.
Making it happen: taking the dress apart
I had seam ripped the arm seams last year after realizing they needed to be let out, so the sleeves were already in that taken-apart state.

As I was taking apart the back, I remembered that I had taken a tuck in the finished dress to make the armsceye a little smaller. Alas, letting this out was not nearly enough to prevent me from needing to replace the back panels.

Making it happen: forming a new plan
Fast forward through a bit of seam ripping (French seams make for a lovely finish, but also mean double the seam ripping!), and I had a bunch of loose panels flopping around. I used the original back pieces and my desired new measurements to cut mockup pieces of what I thought the back should become. I safety pinned those in and tried the dress on to make sure I was on the right track.

Here is the old back piece laid over the mockup. It’s not a huge difference, but that 1″ or so on most edges made a huge difference in terms of fit.

I also made a pattern piece for the arm gusset I needed based on the measurements I wanted the new sleeve size to be. In the end, I decided to extend the gusset all the way down to the cuff opening, as I figured a little extra room for my hand to get through was a reasonable idea (it was a tight squeeze otherwise!).
Then, I used my minimal scraps to cut out the new pieces. I’m super pleased that even with small scraps I was able to match up the block printed areas!

For the back pieces, the image below shows what I had to work with. Not much! I could fit both pieces if I didn’t maintain symmetry in the block print, but… I did such a nice job matching it up when the dress was made! I just couldn’t bring myself not to make the re-do match, too! But I couldn’t get two pieces with matched patterns out of what was left.
It was too much to think about late at night and I knew I only had one chance at cutting to get it right…
So I took a break and came back to it another day. And I had a brainstorm! The way to make my goal happen was to piece one of the pieces somewhere. I could have placed an extra seam in a shoulder area, but that seemed more obvious than my second option given the sheer fabric of the dress. The second option that I decided on is a vertical seam in the white space near the center back opening. There was just enough fabric to make it happen!

Making it happen: putting the dress back together
With my new back pieces cut, it was just a matter of putting them back into all of the seams (including the armsceyes, shoulders, side back, and waist). I was able to reset the sleeves without any of the original gathers, which allowed for the extra circumference my new back pattern had created. Then, I created a new drawstring channel along the neckline and re-applied my closures… and the update was complete!
Here is the new back view of this dress, with the pieced seam on right (but with symmetrical block printing!).

I used a French seam to attach the pieced bit, so that it would match all of the other seams in the dress and stay nice and tidy with no fraying edges.
I also made the right side of the drawstring come out before the center back edge, so that the overlap with the hook can still function properly while the drawstring pulls up the excess width across my shoulders that I included. (There was extra in the original version, too… but I maxed that out years ago!)

Here’s another view of the lovely, tidy interior of the dress with the updated back.

And finally, here is a photo of the finished sleeves with the added gussets. Where the block printing is located the seams blend so well you can’t even see them! It makes my heart pitter-patter with glee!
The final step after putting in the gussets was to re-hem the cuff openings.

And then… this dress was updated! Now it’s a story of ‘when the dress fits again!’