They were the wholesome educational aids which taught generations of children the basics of everything from cake decorating to nuclear power.
But now Penguin Ladybird Books have tapped into the "kidult" trend, launching a series of books which promise to help with modern day problems such as "mid-life crises", hangovers and dating.
While the original books reflected an idealised world of happy nuclear families and endless promise, the new editions are darkly comic.
"When we're young we wonder if we'll be a surgeon or an astronaut. We can be anything we want to be. Then one day we can't," begins The Ladybird Book of the Mid-Life Crisis.
Author Joel Morris, who helped write the new books said: "That bit makes me cry. It's too close to the bone."