I think it would be easy to change the sleeves slightly and I'll need to add the collar.
Another close pattern that would be cool is Simplicity 2589:
It needs a bit more adjusting but it's so beautiful. :) These patterns look like they will need correct undergarments so another option if she's not wanting to bother with all that is to use a simple pattern like McCall's 5954:
Definitely not nearly as cool but still could be adjusted to work. :)
I'm excited to get started on this project...but it might not be for a little while. But it's never too early to start researching!
I'm excited to see who Chelsea chooses to be. I'm half tempted to dress up too. :)