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. Macmillan Children's Books announced that Halliwell had signed a contract to write six books featuring the character on 12 April 2007.
The first book, Ugenia Lavender, was published on 2 May 2008 in the UK. Subsequent titles and planned release dates are Ugenia Lavender and the Terrible Tiger (6 June 2008), Ugenia Lavender and the Burning Pants (4 July 2008), Ugenia Lavender: Home Alone (1 August 2008), Ugenia Lavender and the Temple of Gloom (5 September 2008) and Ugenia Lavender: The One and Only (3 October 2008).
The books follow the adventures of nine-year-old Ugenia, a character based on Halliwell, alongside her friends Bronte, Rudy and Trevor. Other characters are said by Halliwell to be loosely based on Gordon Ramsay, George Michael, Marilyn Monroe, Vincent van Gogh, Wayne Rooney and the character Justin Suarez from the TV series Ugly Betty. The character Princess Posh Vattoria, a caricature of Halliwell's bandmate Victoria Beckham, was featured in early drafts but has not appeared in the book series.
Each title will feature a newsletter from Ugenia highlighting lessons she has learned, along with quizzes, riddles and crosswords, and will be available in an audio book edition read by Halliwell.
Promotional activities for the series included a launch reading by Halliwell at London Zoo on 27 April 2008 and a seven-city UK book tour planned for May 2008. Halliwell has recorded a theme tune for use in advertisements for the books.
A review in the Liverpool Echo described the first book as "eminently readable and exciting". The children's book reviewer in The Observer said it was "good fun" but criticised the quality of the prose.
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