Question: What brand did the film, "The Barbie Diaries," focus mainly on? 

Context articles: Mattel
Barbie as Rapunzel
Skye Sweetnam
Role of networks in electoral behavior
Barbie in the Nutcracker
Barbie as the Island Princess
My Scene: Jammin' in Jamaica
Charmz
The Barbie Diaries
Barbie: Mermaidia

Mattel, Inc. ( ) is an American multinational toy manufacturing company founded in 1945 with headquarters in El Segundo, California.
 In 2014, it ranked #403 on the Fortune 500 list.
 The products and brands it produces include Fisher-Price, Barbie dolls, Monster High dolls, Ever After High dolls, Winx Club dolls, Hot Wheels and Matchbox toys, Masters of the Universe toys, American Girl dolls, board games, and WWE toys.
 In the early 1980's, Mattel produced video game systems, under its own brands and under license from Nintendo.
 The company has presence in 40 countries and territories and sells products in more than 150 nations.
 The company operates through three business segments: North America, international, and American Girl.
 It is the world's largest toy maker in terms of revenue.
 On January 17, 2017, Mattel named Google executive Margo Georgiadis as its next CEO.
Barbie as Rapunzel is a 2002 direct-to-video Barbie film directed by Owen Hurley.
 It is the 2nd in the Barbie film series of computer animated Barbie films, and features the voice of Kelly Sheridan as Barbie.
 The story is adapted from the Brothers Grimm fairy tale "Rapunzel".
 This was the first Barbie direct-to-video release to be distributed by Right Entertainment in the UK.
Skye Alexandra Sweetnam (born May 5, 1988) is a Canadian singer-songwriter, actress, and music video director.
 She first entered the mainstream in 2003 with the release of her debut single "Billy S." More than a year later, her debut album, "Noise from the Basement", was released along with the singles "Tangled Up in Me" and "Number One".
 Sweetnam is also known for her voice work in The Barbie Diaries.
 In 2006, she was nominated for a Juno Award for New Artist of the Year.
 Her second album, "Sound Soldier", was released in 2007.
 Now known by the stage name Sever, she is currently the lead singer of the band Sumo Cyco.
Networks in electoral behavior, as a part of political science, refers to the relevance of networks in forming citizens’ voting behavior at parliamentary, presidential or local elections.
 There are several theories emphasizing different factors which may shape citizens' voting behavior.
 Many influential theories ignore the possible influence of individuals' networks in forming vote choices and focus mainly on the effects of own political attitudes – such as party loyalties or party identification developed in childhood proposed by the Michigan model, or on the influence of rational calculations about the political parties’ ideological positions as proposed by spatial and valence theories.
 These theories offer models of electoral behavior in which individuals are not analyzed within their social networks and environments.
 In a more general context, some authors warn that the hypothesis testing done mainly based on sample surveys and focused on individuals’ attributes without looking at relational data (relations among individuals) seems to be a poor methodological instrument.
 However, models emphasizing the influence of individuals’ social networks in shaping their electoral choices have been also present in the literature from the very beginning.
Barbie in the Nutcracker is a 2001 computer animated direct-to-video Barbie film directed by Owen Hurley and Nishpeksh Mehra.
 It was the first Barbie film since 1987's "".
 It is also the first in the Barbie film series of computer animated Barbie films, all of which feature the voice of Kelly Sheridan as the Barbie.
 The story is loosely adapted from E. T. A. Hoffmann's story "The Nutcracker and the Mouse King" and music based from Tchaikovsky's ballet "The Nutcracker".
Barbie as the Island Princess is a 2007 direct-to-video computer animated Barbie film.
 It is part of the Barbie film series, a series of CGI Barbie films, the second to be a musical, and the first movie of Barbie animated under the name of Rainmaker Animation though it was animated by the old Mainframe Animators only.
 The film features the voice of Kelly Sheridan, who has been voicing the female protagonist in all the CGI Barbie movies to date, as Rosella.
My Scene: Jammin' in Jamaica is the first My Scene film, released On May 15, 2004 in the United States.
 It was sold together with the My Scene "Jammin' in Jamaica" dolls.
 When Madison and Urban Desire go to Jamaica for a contest, Barbie, Nolee and Chelsea raise money to go there too and support their friends.
 The film was directed by Eric Fogel, who also directed "The Barbie Diaries".
Charmz is a four-piece girl band from Australia.
 They were put together by Mattel and Shock Records to help promote the release of "The Barbie Diaries", a film which features Barbie in a band called Charmz.
 It was created through a singing contest for 8- to 14-year-old girls who had to send in a video of themselves singing.
 The winners from around 500 entrants were 13-year-olds Gianna Dalla-Vecchia, Paris Maggs and Lauren Stowe and 14-year-old Shannon Cordes.
 They were taken to Sydney to recorded their album and while there they were mentored by Ricki-Lee.
 Their self titled album, containing covers of songs by Robbie Williams, Bananarama, Gwen Stefani, Ricki-Lee, The Mamas & Papas, Hilary & Haylie Duff.
 and was released on October 28, 2006.
 The single, "This Is Me", peaked at #57 on the ARIA singles chart
The Barbie Diaries is a 2006 motion capture film featuring popular Mattel character Barbie, and directed by Eric Fogel (the director of My Scene films).
 It is part of the "Barbie" film series featuring the voice of Kelly Sheridan as Barbie, and Skye Sweetnam as the singing Barbie.
 By the Curious Pictures's Movie.
 This is the last Barbie film made by Lionsgate before Barbie film series was sold to Universal.
Barbie: Mermaidia (alternatively Barbie Fairytopia: Mermaidia) is a 2006 direct-to-video Barbie film directed by Walter P. Martishius and William Lau, and produced by Mainframe Entertainment.
 It is seventh in the Barbie film series of computer-animated Barbie films, and a direct sequel to "".
 The film stars Kelly Sheridan as the voice of Elina and Chiara Zanni as the voice of Nori.
 The plot follows shortly after the events of "", focusing on a fairy named Elina and a mermaid named Nori who attempt to rescue Nalu, a merman prince, from the clutches of the evil Laverna.
 Like all the CGI Barbie films, a line of dolls and toys were produced and released with the film.
 This was also the last Barbie film to be released on VHS.