Ugenia Lavender is the title character in a series of children's novels written by Geri Halliwell, who achieved fame as a member of the Spice Girls and as a solo singer-songwriter before deciding to pursue a career as an author. Halliwell began writing the books in 2004.[1] Macmillan Children's Books announced that Halliwell had signed a contract to write six books featuring the character on 12 April 2007.[2]