Nadia Piggins

Nadia Piggins is the indentical twin fourteenuplet sister of Sarah Piggins, and Nadia appeared in the third book. She posed as an author named Jo and tried to write a book on her sister, but her actual plan to get her mother's recipe book failed. She was trying to get the book so that she could get the recipes published and make a fortune, but was later told by her sister Sarah that the book had been destroyed. This ended Nadia's quest to find it.

Personality
Little is known about Nadia's personality. Judging by the way she tried to get the book, she is sneaky and smart about her actions, persuading Sarah to allow her to write the book by saying that she would instead go write a book about a flying armadillo in Mexico. Nadia also seems to have had the plan in action all along, but she stopped trying when she discovered from her sister Sarah that the book had been destroyed.

The book was eaten by Sarah and Nadia's mother when it was accidentally dropped into their mother's black forest cake, and Sarah (Nanny Piggins) says that nothing would last if it was dropped into her mother's black forest cake.