New doll challenges Barbie body shape

American artist Nickolay Lamm has created a rival to the Barbie doll - one with the slogan "average is beautiful"

He produced a prototype of the doll, Lammily, last year based on US government measurements for an average 19-year-old American woman and launched a crowd-funding campaign to put it into production.

The doll comes with stickers that include tattoos, spots and cellulite.