AceShowbiz -

The Olsen twins can now add author to their growing list of professions. Mary-Kate Olsen and Ashley Olsen are about to pen a new book together and will have it published through Penguin Young Readers Group.

The siblings who already have their own range of clothes, fragrances, magazines, movies and posters are publishing a coffee table book, titled "Influence". The set reportedly will detail their favorite style icons and the people who have influenced them over the past decade.

It will feature "the most interesting, challenging, creative people we know - the ones who helped pave the way for us and our generation," Ashley said in a statement. "Ashley and I interviewed the people who have inspired us, with the hope that they will inspire and teach others," Mary-Kate added.

"Influence" will feature influential figures, including shoe guru Christian Louboutin, supermodel and occasional actress Lauren Hutton, writer Bob Colacello, photographers Terry Richardson and Jack Pierson, and jewelry designer and sculptor Robert Lee Morris. It will, moreover, include exclusive photographs of the siblings and never-before-seen materials as well as interviews from Mary-Kate and Ashley's personal collections.

"Influence" will be published in the fall.