Question: Madison Lee De La Garza, is an American actress, and is the younger half-sister of which American singer, songwriter, and actress, that after making her debut as a child actress in "Barney & Friends, she rose to prominence in 2008 when she starred in the Disney Channel television film "Camp Rock"?
Context: Madison Lee De La Garza (born December 28, 2001) is an American actress.  She is known for playing Juanita Solis on "Desperate Housewives".  She is the younger half-sister of singer-songwriter and actress Demi Lovato. 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). Luis de la Garza (born May 20, 1954 in Mexico City, Mexico) is a television executive, businessman and community leader in Texas.  He is the recipient of numerous community awards for his personal success in business and media, as well as for his efforts to assist other Mexican-American entrepreneurs start their own businesses.  To the shock of his family and many who have worked with him, de la Garza was arrested on suspicion of being a serial bank robber on June 22, 2013.  He subsequently pleaded guilty to bank robbery charges and is currently serving a 20-year federal prison sentence. Meaghan Jette Martin ( ; born February 17, 1992) is an American actress and singer.  She was best known for her role as Tess Tyler in the Disney Channel television film, "Camp Rock" and .  Martin starred in the ABC Family television series, "10 Things I Hate About You" as Bianca Stratford.  Martin also guest stars on "The Coppertop Flop Show".  Martin is also known for lending her voice for Naminé in the video game series "Kingdom Hearts" as well as voicing and motion capturing Jessica from the video game "Until Dawn". 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. Camp Rock 2: The Final Jam is a 2010 Disney Channel Original Movie and the sequel to the 2008 film "Camp Rock".  The film premiered on Disney Channel on  3, 2010 (2010--) . Demetria Devonne Lovato, known professionally as Demi Lovato ( or ; born August 20, 1992), is an American singer, songwriter, and actress.  After making her debut as a child actress in "Barney & Friends", Lovato rose to prominence in 2008 when she starred in the Disney Channel television film "Camp Rock" and released her debut single "This Is Me" which peaked at number nine on the "Billboard" Hot 100.  The success of the film and its soundtrack resulted in a recording contract with Hollywood Records.  Her debut album, "Don't Forget" (2008), debuted at number two on the US "Billboard" 200.  The following year, Lovato was cast as the titular character of the television series "Sonny with a Chance" and she released her sophomore album, "Here We Go Again", which became her first one to top the "Billboard" 200 chart. Aaryn Élan Doyle (born January 4, 1993) is a Canadian actress, singer, rapper, songwriter, dancer, model, and voice actress.  She is best known for her role as Lola Scott in the Disney Channel Original Movie "Camp Rock".  In 2008, Doyle was signed to the Ford Modeling Agency, but is currently represented by IBIS Talent Management.  Doyle has represented brand lines such as Diesel and Nike, as seen in "Camp Rock" red carpet shots.  According to media insiders, Doyle is to embark upon a new Marketing endeavour in business as well as in entertainment in 2015 with a full music media campaign in the works in order to take advantage of Doyle's vocal talents and songwriting capabilities. Camp Rock is the soundtrack album from the Disney Channel Original Movie of the same name, released on June 17, 2008.  Full songs of the album were made available on "Camp Rock"'s official web site for one week, beginning June 10, 2008, and the full soundtrack premiered on Radio Disney on June 14, 2008 during "Planet Premiere: Camp Rock".  The soundtrack was released in the UK on July 14, 2008. Don't Forget is the debut studio album by American singer Demi Lovato.  It was released on September 23, 2008 by Hollywood Records.  Lovato started working on the album in September 2007, during the filming of the Disney Channel television film "Camp Rock".  Lovato co-wrote most of the songs with the American boy band the Jonas Brothers, who produced the album alongside record producer John Fields.  The album also includes Kara DioGuardi, Jason Reeves and Rooney frontman Robert Schwartzman, who collaborated from the album.  "Don't Forget" features a glam rock sound and the lyrics deal with various teen topics.
Answer: Demi Lovato