don't think about what your dress size is, just work with your actual measuremrnts.
make your dummy those measurements (you can use fabric to pad it out if you need to) and work to that.
it's quite easy with practice to adjust pattens to your size if you are working on a dummy. just trace the pieces and move the bits around on the dummy. you don't need too expensive a dummy, just make sure you get the bigger one. this kind of thing but you can usually get them cheap secondhand.
bran I am so glad someone asked a question about dressmaker's dummies because I have been thinking about getting one too.
<slight hijack> I too am an odd shape, I am a little chesty so if I buy something tailored then the front will obviously have to fit but the back is too big, and I also have a hollow at the base of my spine before my generous backside sticks out
In the past my lovely Mum has altered stuff for me but sadly she died a few years ago so now I just buy things in stretchy material so that I can stretch out the front.
Would I have to pad out the boob area at the front? Will I have to measure my front to the side, then my back to the side and go from there?
I have been looking at the dressmaker's dummies that have the most adjustments on them. Any help in this matter would be appreciated. Like bran I don't know if my body is longer than average or not.