Take a peek inside Andy Lee's adorable new children's book.

It looks like Andy Lee could have a best-seller on his hands.

It was only yesterday that the comedian revealed he had written a book, Do Not Open This Book, for his nephew George’s first birthday. By this morning, online bookseller Booktopia had already sold out of its stock.

The book is illustrated by Heath McKenzie. Here’s a peek at some of the pages.

From Do Not Open This Book. Images courtesy Lake Press.

It was a birthday surprise that was five months in the making.

Andy wrote the book and his friend Horgs, aka Michael Horgan, who just happens to be a publisher at Lake Press published it.

About two weeks ago Lee took his sister, Alex Miles, and her son, George, to lunch. He casually suggested they drop into a bookshop first. It was there that Lee presented his sister and nephew with the published book.

When Lee told Miles that he'd written it for George's birthday, she couldn't believe it.

"Are you serious? Oh wow... Oh my God."

Of course, it was all caught on camera.

Meanwhile, George, aka Special G, is loving his book. We know a lot of other Aussie kids are going to be loving it too.

Who wouldn't want Andy Lee as their uncle?

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