Question: Who was the author of Princess of Gossip who also starred in Disney Channel Original Move?

Context paragraphs:
Laura Marano: Laura Marie Marano (born November 29, 1995) is an American actress and singer.  She starred in the Disney Channel series "Austin & Ally" as Ally Dawson.  Marano was one of the five original classmates in "Are You Smarter than a 5th Grader? ".  She starred in "Without a Trace" for three seasons and also "Back to You", in both instances playing the daughter of the main characters.  Marano starred in the indie film "A Sort of Homecoming".  Marano also starred in the 2015 Disney Channel Original Movie "Bad Hair Day" along with "Good Luck Charlie" actress Leigh-Allyn Baker.  In 2015, she signed with Big Machine Records and released her debut single "Boombox" on March 11, 2016.  At the end of 2016, Big Machine Records made the decision to drop all of their pop artists.  Marano then signed to Warner Bros.  Records in 2017 and plans to release her debut album with the label.  She is also the younger sister of actress Vanessa Marano who starred in Freeform's "Switched at Birth".

Princess of Gossip: Princess of Gossip is a young adult novel by Sabrina Bryan (The Cheetah Girls, Dancing with the Stars) and Julia DeVillers (How My Private, Personal Journal Became A Bestseller).  The book, published by MTV/Simon & Schuster was released on October 7 and sold out on Amazon.com on the first day.

Joe Jonas: Joseph Adam "Joe" Jonas (born August 15, 1989) is an American singer and actor.  Jonas first rose to fame as a member of the pop-rock band Jonas Brothers, along with his brothers Kevin and Nick.  The band's debut album, "It's About Time" (2006), was a commercial failure following a limited release.  The group signed with Hollywood Records, and in 2007 released their eponymous second studio album.  The album went on to be a commercial success for the group, selling over two million copies in the United States alone.  The group became heavily involved with the Disney Channel and later made their film debut in the Disney Channel Original Movie "Camp Rock" (2008).  The film and its soundtrack became a major hit for the network and helped propel the brothers into further commercial success.  Their third studio album, "A Little Bit Longer" (2008), became their first to top the "Billboard" 200 and went on to become their highest selling album to date.  The album's lead single became a top five hit in the United States.  Their fourth studio album, "Lines, Vines and Trying Times" (2009) became their second to top the charts in the United States.  The brothers also starred in two of their Disney Channel series from 2009 to 2010, being "JONAS L.A." and "".  In 2010, the group starred in "", reprising their roles from the original film.

Northern Lights (1997 film): Northern Lights is a 1997 television film based upon the 1988 stage play of the same name by John Hoffman.  Directed by Linda Yellen, the film stars Diane Keaton, Maury Chaykin, Joseph Cross, and Kathleen York.  It was produced for the Disney Channel and premiered on August 23, 1997.  Some sources identify "Northern Lights" as the first Disney Channel Original Movie, though "Northern Lights" was not included in Disney Channel's 100 Original Movies celebration that aired in May–June 2016, and Disney Channel considers 1997's "Under Wraps" to be the first official Disney Channel Original Movie.

Jonas Brothers: The Jonas Brothers were an American rock and pop rock band.  Formed in 2005, they gained popularity from their appearances on the Disney Channel television network.  They consist of three brothers: Paul Kevin Jonas II, Joseph Adam Jonas, and Nicholas Jerry Jonas.  Raised in Wyckoff, New Jersey, the Jonas Brothers moved to Little Falls, New Jersey in 2005, where they wrote their first record that made its Hollywood release.  In the summer of 2008, they starred in the Disney Channel Original Movie "Camp Rock" and its sequel, "".  They also starred as Kevin, Joe, and Nick Lucas, the band JONAS, in their own Disney Channel series "JONAS", which was later re-branded for its second season as "Jonas L.A." The show was eventually cancelled after two seasons.  The band released four albums: "It's About Time" (2006), "Jonas Brothers" (2007), "A Little Bit Longer" (2008), and "Lines, Vines and Trying Times" (2009).

Twitches Too: Twitches Too is a 2007 Disney Channel Original Movie.  It is the sequel to the Disney Channel Original Movie "Twitches", released in 2005.  The film began production in late April 2007 and was released on October 12.  It aired during "Disney Channel's Halloween Month".  The Disney Channel Original Series, "Wizards of Waverly Place", premiered following the film's premiere.  The first trailer was released during the premiere of "High School Musical 2".  On its premiere night, the movie brought in 6.96 million viewers.  To date, it is the last sequel to a Disney Channel Original Movie that is not a musical.

Sabrina Bryan: Reba Sabrina Hinojos (born September 16, 1984), better known by her stage name Sabrina Bryan, is an American singer, actress, author, songwriter, fashion designer, choreographer, dancer, and television personality best known as a member of the girl group The Cheetah Girls, and for starring in the Disney Channel Original Movie of the same name and its sequels, "The Cheetah Girls 2" and "".  Before she appeared on television, Bryan was a dancer, and trained at Hart Academy of Dance, located in La Habra, California.

Gary Marsh: Gary Marsh is President and Chief Creative Officer for Disney Channels Worldwide, where he develops and produces Disney Channel Original Series, Disney Channel Original Movies and Disney Junior Series (formerly Playhouse Disney).  He also oversees talent and casting operations for Disney Channel.  Marsh joined Disney Channel in July 1988 as Executive Director, Original Programming.  He was made Vice President eight months later and in 1994, became Senior Vice President.  In 1999, he was promoted to Executive Vice President and in 2001, Marsh assumed the role of Executive Vice President, Original Programming and Production, Disney Channel.  From 2005-09, he was President, Entertainment, Disney Channels Worldwide and in 2009 he assumed the role as Chief Creative Officer, Disney Channels Worldwide before being promoted to President and Chief Creative Officer, Disney Channels Worldwide in 2011.

Jett Jackson: The Movie: Jett Jackson: The Movie is a 2001 American Disney Channel Original Movie based on the Disney Channel series "The Famous Jett Jackson".  It is the first Disney Channel Original Movie to be based on a Disney Channel Original Series.

The Cheetah Girls 2: The Cheetah Girls 2 is the 2006 sequel to the Disney Channel Original Movie, "The Cheetah Girls."  Its premiere received the highest ratings of all Disney Channel Movies at its time, a total of over 8.1 million viewers, beating the premiere ratings of "High School Musical" (7.7 million), and beating previous highest rated DCOM record holder, "Cadet Kelly" (7.8 million) as well as becoming the highest rated "Cheetah Girls" movie in the trilogy.  The sequel is about a talented teen quartet who take a whirlwind tour of Spain to pursue their dreams of pop superstardom.  Unlike its predecessor which incorporated karaoke-like musical numbers, "The Cheetah Girls 2" turned into more of a musical.  This is also the last film in the series to star Raven-Symoné.  The film is currently the 7th highest-rated Disney Channel Original Movie and was the highest-rated Disney Channel Original Movie of 2006.

Supporting paragraphs: Princess of Gossip Sabrina Bryan
Answer: Sabrina Bryan