So, I did:
The pattern included a dress, with a gathered, elasticated kneck-line. I added an inverted pleat and two buttons, to make the front look smart. I also made little white linen & cotton knickers (which you can't see in the photo) and a lace-edged petticoat, with a ribbon-tied drawstring waist - old fashioned and traditional!
I'm hoping that Miss Rabbit will come and visit me before long, so I can measure her, as I'm making a coat too, though I didn't get time to complete that before Christmas.
Thanks to Abi for sharing the pattern link. I'm pretty pleased with how she turned out - and Keri-Anne loves her, so it was all worthwhile!