A Nanny with trotters!

Nanny Piggins, the world's most glamorous flying pig, runs away from the circus and goes to live with the Greens as their nanny. The Green children, Derrick, Samantha and Michael, fall in love with her instantly. Who could not fall in love with a Nanny whose only job qualifications are her astonishing ability to be fired out of a cannon and her amazing ability to make chocolate cake, sometimes both at the same time?