He's not kidding: Pharrell Williams doing picture book for children

Pharrell Williams has a Happy deal for a series of children's picture books. The Grammy Award-winning performer has an agreement with Putnam Books for Young Readers for four picture books, starting with one inspired by his hit song.

Pharrell Williams has a Happy deal for a series of children's picture books. The Grammy Award-winning performer has an agreement with Putnam Books for Young Readers for four picture books, starting with one inspired by his hit song.

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Putnam announced Tuesday the book, Happy, will be published September 22 and will feature photographs of children from around the world "celebrating what it means to be happy." It plans a first printing of 250,000 copies.

Pharrell has won 10 Grammys, including two for Happy. It was featured on the soundtrack of Despicable Me 2 and was an Oscar nominee last year for best song.