Who’s Your Real Mom by Bernadette Green & Anna Zobel

“Elvi, which one is your mom?”
“They’re both my mom.”
“But which one’s your real mom?”

When Nicholas wants to know which of Elvi’s two moms is her real mom, she gives him lots of clues. Her real mum is a circus performer, and a pirate, and she even teaches spiders the art of web. 

But Nicholas still can’t work it out! Luckily, Elvi knows just how to explain it to her friend. . .

This beautifully illustrated story celebrates nontraditional families and captures exactly what lies at the heart of family life―love.