Meghan Markle is writing her first book, The Sun reports.

It is not yet entirely clear what the book is about, but it will probably be a children’s book in which Markle’s love for animals is incorporated.

Allegedly the wife of the British prince Harry, who is celebrating her 38th birthday on Sunday, is planning to write several books. Friday also saw the September edition of Vogue, of which Markle was the guest editor.

It is not the first time that someone in the British royal family has written a children’s book. For example, Prince Charles, Prince Harry’s father, published the book The Old Man of Lochnagar in 1980 .

Sarah Ferguson, the ex-wife of the British prince Andrew, released a series of books about the character Budgie the Helicopter in the nineties.