Sooo my favorite option is kind of defunct since the creator, Lampy, took down the itch page and no longer provides support for their programs, but MousePSD has been kind of a life saver for me since you can just pop a photoshop file into it and get a working dressup game! It can be a little bit finicky due to the nature of PSD files but it can export for html5 as well as .exe files.
There is an archived version of the original itch.io page here, which contains instructions on how the program works + readable comments in case you happen to need to troubleshoot one of the couple of issues or have a question that people have asked about there. However, since Lampy took down the itch.io download (what I gather is they got tired of people asking support questions and just took down all the pages), the download isn't available there.
But! From what I understand of the license (included as a .txt file in the program download), distributing your own forks of the program is completely fine so long as the license file remains in tact, and someone has reuploaded it packaged to archive.org so it can be downloaded there and run once you unzip the file! Should work right out of the box as long as you have a .PSD file set up according to the right structure as listed on the page.
I am not an expert but I have downloaded this copy and it functions the same as the one I downloaded directly from Lampy's itch.io in 2023 and it did not explode my computer--an extra virus scan can never hurt lol but I haven't found anything fishy w this upload.
Hope that's not all too long, and to state clearly, I'm not affiliated with lampysprites or the archive.org uploader, I just deeply appreciate what this program can do and its been a total lifesaver for me--will likely be what I use for the jam if I don't go a different route with an old WIP project made in Clickteam Fusion lol! There's a demo on the original archived itch page, and not to plug my own stuff but I have examples here and here of things I made with MousePSD. (Second one has music, watch out LOL) and just wanna say btw, thank you so much for hosting this jam!! If you can't tell, I'm passionate about dollmakers and it just breaks my heart that they're not so common and accessible like they used to be. Putting together the effort for a movement to make more and make that more approachable people is super cool of you to do ^_^