I've just discovered this on FaceBook (but was unable to "share" for some reason) so full acknowledgement is given to the author/artist whoever it may be.
The important thing is that this is the type of "poster" we should see more often. I wonder sometimes why we don't see many children's books about "chubby" boys and girls, in a positive way.
In fact why why don't we see a lot more curvaceous "female" heroines (or larger "male" heroes) in novels. Can you think of any? Write and share your finds.