The Voice judge Will.i.am will meet fans and sign copies of his new book at Waterstones Piccadilly in February.
He will join co-author Brian David Johnson to sign copies of their book WaR: Wizards and Robots
WaR: Wizards and Robots is an action-adventure novel created by the pair.
Anyone under the age of 14 years must be accompanied by an adult.
The signing takes place on February 6. You can find out more at Waterstones website.