Question: When did the artist who was a guest judge in Under the Gunn begin her music career?

full_context: Document 1: Meghan Trainor discography: American singer and songwriter Meghan Trainor has released two studio albums, two EPs, five singles and three independent albums. Prior to her solo career, she was part of a local family band called Island Fusion. Following the release of three independent albums, "Meghan Trainor" (2009), "I'll Sing with You" and "Only 17" (2011), Trainor signed a record deal with Epic Records in February 2014. As a result, her first three records were pulled from circulation. Trainor's debut single, "All About That Bass", was released through Epic on June 30, 2014, with it topping the "Billboard" Hot 100 for eight non-consecutive weeks. The track became the longest-reigning number-one by an Epic recording artist in the United States, surpassing the seven-week record held by Michael Jackson's songs "Billie Jean" (1983) and "Black or White" (1991). "All About That Bass" became a number-one single in fellow 58 countries and sold over 11 million units internationally, thus becoming one of the best-selling singles.
Document 2: Lorde discography: New Zealand singer and songwriter Lorde (Ella Yelich-O'Connor) has released two studio albums, three extended plays, eight singles and four music videos. At the age of 13, she was signed to Universal Music Group (UMG) and started to write music. In November 2012, when she was 16 years old, she self-released "The Love Club EP" via SoundCloud. The EP was released for sale by UMG in March 2013; a song from the EP, "Royals", became a hit in New Zealand in early 2013. Later that year, "Royals" topped numerous mainstream charts internationally, including the US "Billboard" Hot 100. With "Royals", Lorde became the first New Zealand solo artist to reach number one on the US Hot 100.
Document 3: Project Runway Philippines (season 3): The 'third season of Project Runway Philippines premiered on March 25, 2012, almost three years after its preceding season. It is shown on ETC, which has since ceased becoming a cable channel and transferred to RPN as a VHF channel. Tweetie de Leon-Gonzalez, a former model and president of Professional Models Association of the Philippines, is the new host replacing Teresa Herrera. Fashion designer Rajo Laurel and style columnist Apples Aberin returned as judges, while fashion designer Jojie Lloren remained as mentor.
Document 4: Geordie Shore (series 14): The fourteenth series of Geordie Shore, a British television programme based in Newcastle upon Tyne, was confirmed on 31 October 2016 when cast member Scotty T announced that he would be taking a break from the series to focus on other commitments. The series was filmed in November 2016, and began airing on 28 March 2017. Ahead of the series, it was also confirmed that original cast member Holly Hagan had quit the show, following her exit in the previous series. On 28 February 2017, it was announced that eight new cast members had joined for this series. Zahida Allen, Chelsea Barber, Sam Bentham, Sarah Goodhart, Abbie Holborn, Elettra Lamborghini, Billy Phillips and Eve Shannon all appeared throughout the series hoping to become permanent members of the cast, and in the series finale, Holborn was chosen. Goodhart and Allen both previously appeared on "Ex on the Beach", with the former appearing on the third series of the show as the ex-girlfriend of current "Geordie Shore" cast member Marty McKenna (before he joined the cast). Lamborghini has also appeared on "Super Shore" and participated in the fifth season of "Gran Hermano VIP", the Spanish version of "Celebrity Big Brother". It was also confirmed that Scott would return later in the series.
Document 5: List of songs recorded by Ariana Grande: Ariana Grande is an American singer and actress. Her music career started in 2011 when she contributed vocals to the soundtrack albums for the American TV sitcom, "Victorious", in which she also starred from 2010 to 2013. Three soundtrack albums were released between 2011 and 2012. In 2011 Grande also began to work as an independent artist outside of "Victorious". Her debut single "Put Your Hearts Up", a bubblegum pop song, was released the same year. Grande later called it "inauthentic and fake" and described it as "the worst moment of my life"; she hid the video on her Vevo account. After she expressed her disappointment with the song, Republic Records gave Grande more creative control over the production of her debut album.
Document 6: Under the Gunn: Under the Gunn (also known as "Project Runway: Under the Gunn") is an American reality competition series that premiered January 16, 2014, on Lifetime. Production of the series began in November 2013, with the finale filmed on December 17, 2013. The series was filmed at the Fashion Institute of Design and Merchandising in Los Angeles. Guest judges included: Heidi Klum, Neil Patrick Harris, Macklemore, Jaimie Alexander, Zoey Deutch, Zendaya, Georgina Chapman, Sarah Hyland, Trina Turk, and Wendy Partridge.
Document 7: Cardi B discography: American rapper Cardi B has released two solo mixtapes, thirteen singles (including nine as a featured artist) and nine music videos. In 2015, she embarked on a musical career, after amassing a large Internet fan base, following her appearances on VH1's "." On March 7, 2016, Cardi B released her first full-length mixtape, "Gangsta Bitch Music, Vol. 1" with KSR Group. On September 12, 2016, KSR Group released the compilation, "Underestimated: The Album", which is a collaboration between KSR Group artists of Cardi B, Hood Celebrityy, SwiftOnDemand, Cashflow Harlem and Josh X. It was previously released only to attendees of their U.S. tour. KSR Group's flagship artist Cardi B said "I wanted to make a song that would make girls dance, twerk and at the same time encourage them to go get that Shmoney," in regards to the compilation's single "What a Girl Likes." On January 20, 2017, Cardi B released her second full-length mixtape as the second installment to her "Gangsta Bitch Music" series, which spawned the single "Bronx Season", an ode to her hometown borough. In February 2017, Cardi B signed her first solo major label record deal with Atlantic Records. Cardi B's first single for Atlantic titled "Bodak Yellow", proved to be a success, becoming a crossover hit single, reaching position number one on the US "Billboard" Hot 100 chart.
Document 8: Project Runway Philippines (season 1): The first season of "Project Runway Philippines" premiered on July 30, 2008 on cable through ETC Entertainment Central and on free TV through SBN 21. The show was hosted by model and actress Teresa Herrera, with fashion designer and faculty member of School of Fashion and the Arts Jojie Lloren serving as mentor and Marie Jamora as director. Filipino top model and lifestyle feature writer Apples Aberin-Sahdwani and fashion designer Rajo Laurel complete the judging panel. The winner received P500,000 (roughly US$11,000) in cash, a start-up business package, an editorial spread in Mega magazine, and an opportunity to show their collection in Philippine Fashion Week. The final three designers, as revealed in the Finale episode, would get to design a clothing line to be sold exclusively in SM Makati and SM Ortigas, while the winner would display his collection in SM Makati. The Final Runway show was held on October 23, 2008, at the SMX Convention Center in Pasay City, with New York-based handbag and accessories designer Rafé Totengco and notable shoe designer Cesar Gaupo as guest judges. Aries Lagat of Iligan City was declared the winner, beating Philipp Tampus of Lapu-Lapu City and Veejay Floresca of Makati City.
Document 9: Last Shot with Judge Gunn: Last Shot with Judge Gunn is an American reality-based nontraditional court show that debuted in syndication on September 26, 2011. The series is presented by Mary Ann Gunn and distributed by Trifecta Entertainment, with Peter Brennan, Matt Battaglia, and George Jones serving as executive producers on this series, with Lisa Lew as Co-Executive Producer, and Justin Page and Terry Powell as Supervising Producers.
Document 10: Lana Del Rey discography: American singer and songwriter Lana Del Rey has released five studio albums, four extended plays, 20 singles, and 16 music videos. Lana Del Rey signed a record deal with 5 Points Records in 2007 and the following year, she released her debut EP, "Kill Kill", under the stage name Lizzy Grant. Her debut studio album, "Lana Del Ray", was shelved initially and was released in January 2010 under the name Lana Del Ray. However, the record was pulled three months later.
Document 11: Iggy Azalea videography: Australian rapper Iggy Azalea has been featured in twenty-one music videos (including thirteen as a lead artist and five as a featured artist), one film, among various appearances in other audiovisual productions. In 2011, Azalea uploaded on YouTube her debut music video for "Pu$$y," a song from her debut mixtape, "Ignorant Art", where it subsequently went viral, helping to propel the rapper to prominence, after previously sharing home videos as an underground rapper. She released two more videos from the project in following months, "My World" and "The Last Song." In 2012, she aligned herself with Southern rapper T.I.'s Grand Hustle imprint. He was then featured on "Murda Bizness," taken from her "Glory" EP, also appearing in the visuals, marking the beginning of multiple collaborations between the two. Around this time, Azalea made her debut appearance on American television at the 2012 BET Hip Hop Awards alongside other Grand Hustle label-mates. Azalea announced she would be releasing a second mixtape titled "TrapGold" by premiering a video for the track "Bac 2 Tha Future (My Time)." She was a guest performer on VH1 Divas 2012.
Document 12: Made in Chelsea: LA: Made in Chelsea: LA, a spin-off series of Made in Chelsea, a British structured-reality television programme, was confirmed on 14 May 2015. It was announced that the cast of "Made in Chelsea" would be travelling to Los Angeles to film a special series of the show. It was revealed that this would be a stand-alone series which would not be promoted as the tenth series. The tenth series will in fact follow in October 2015. Filming for the spin-off began in late May 2015 and concluded in late-July. This is the second spin-off show filmed in America following the special the previous year. The third episode of this series was filmed in Las Vegas. The six-episode series began on 10 August 2015 on E4. It also featured the brief return of former cast member Gabriella Ellis, as well as the permanent return of Ollie Locke. It was the only series to include American cast members Olivia Fox and Naz Gharai, and the last to include Josh Shepherd. Whilst most of the Chelsea cast featured in this spin-off, there was notable absences from Elliot Cross, Oliver Proudlock, Millie Wilkinson, Nicola Hughes, Rosie Fortescue, Sam Thompson, Spencer Matthews, Tiff Watson, and Victoria Baker-Harber. The series included the end of the relationship between Josh and Stephanie, Jamie starting a holiday romance with Naz before eventually realising he actually has feelings for Jess, and Binky opening up to JP about her growing love for him only for him to break things off completely.
Document 13: Becky G discography: The discography of Mexican-American singer, songwriter, rapper, actress, and model Becky G consists of one extended play and twenty singles. She first began her career with videos posted onto popular video sharing website YouTube prior to being signed to Kemosabe Records. She released her debut single, "Becky from the Block" (2013), after having previously collaborated with artists including will.i.am and Cody Simpson. Her second single, "Can't Get Enough" (2014), featured Pitbull and went on to top the Latin Rhythm Airplay chart in the United States. The song was featured on Gomez's debut extended play, "Play It Again" (2013). She achieved commercial success with her single "Shower" (2014), which became a top twenty hit on the "Billboard" Hot 100 chart. It went on to earn a multi platinum certification from the Recording Industry Association of America (RIAA).
Document 14: Zendaya: Zendaya's music career began in 2011 when she released the single "Swag It Out", followed by the single "Watch Me" (with Bella Thorne); the former was released by an independent record label. She signed a major record deal with Hollywood Records on August 8, 2012, and started recording songs for her debut album on August 12, 2012. The album, titled "Zendaya", was released on September 17, 2013, preceded by the single "Replay".
Document 15: Project Runway Philippines: Project Runway Philippines is the Philippine adaptation of the American reality show "Project Runway". This reality television series, which aims to find "the next big Filipino fashion designer," is produced by Solar Entertainment Corporation and Unitel Productions. It is shown on ETC. The series has an erratic airing schedule, as seasons 1 and 2 aired in 2008 and 2009, season 3 in 2012, and season 4 in 2105. The show was hosted by model and actress Teresa Herrera during the first two seasons. She was replaced by Filipina fashion legend Tweetie de Leon. Fashion designer Jojie Lloren serves as mentor since the first season while Filipino top model and lifestyle feature writer Apples Aberin and fashion designer Rajo Laurel complete the judging panel. The series fourth season ended on September 20, 2015.
ground_truth: 2011