A printable version of the heart-shaped doll stands for hard-body dolls with flat feet. The store-bought versions use a spring to hold the feet, but an elastic band works well with these.
There are two versions. One is based almost 1-to-1 with some of the mass-market versions, the other is made with thicker walls to allow scaling to any size.
They shouldn't need supports, but a brim is helpful for the point of the heart.
The author marked this model as their own original creation.