First thing first, what is dollfie? Well, I believe dollfie is originated from Japan.
Basically, dollfie is similiar to Barbie doll but more advanced. In what way?
More poses: They have more poses because they have joints like a normal human has. (e.g. neck, shoulders, elbows, wrists, thighs, knees, ankles, waist.)
More physical varieties: Everything can change, physically. Eyeball(colour), oppai size, waist size, hip size, hair(colour, style), hand poses.
More items: Clothes can be change to your preference, extra accessories are available.(e.g. almost anything you can thing of)
