Question: How old was the artist that performed the EP 'Beautiful Eyes' when she released her debut studio album?

Context articles: Eyes Wide Open (Sabrina Carpenter album)
Owl City discography
Beautiful Eyes
New Look (band)
Taylor Swift (album)
Ivy discography
Born to Try
Taylor Swift videography
Marcella Detroit discography
Ty Dolla Sign discography

Eyes Wide Open is the debut studio album by American singer Sabrina Carpenter.
 It was released by Hollywood Records on April 14, 2015.
 Carpenter began planning the project in 2014, after she launched her debut EP "Can't Blame a Girl for Trying", she wanted to make a full-length LP.
 All the tracks on that EP were included on the album.
 The majority of the album was recorded in 2014, but she recorded since 2013 until 2015.
 The album was produced by various artists like Jerrod Bettis, Mitch Allan, Brian Malouf, Jim McGorman, Steven Solomon, Captain Cuts, Matthew Tishler, Jon Ingoldsby, Jon Levine, Jordan Higgins, Matt Squire and John Gordon.
 Musically, the album has a pop sound with folk, pop rock and teen pop influences.
 Its production consists on guitars, piano, drums and keyboards.
 In general, the album talks about Sabrina's personal experiences, friendship, love and teenage problems.
The discography of American electronica project Owl City consists of five studio albums, four extended plays, twenty singles (including three as a featured artist), and twelve music videos. Owl City issued its debut release, the extended play "Of June", in September 2007; it peaked at number 15 on the United States "Billboard" Dance/Electronic Albums chart.
 His debut studio album "Maybe I'm Dreaming" followed in December 2008, peaking at number 13 on the Dance/Electronic Albums chart.
 Following the success of "Of June" and "Maybe I'm Dreaming", Young signed to Universal Republic Records in late 2008.
 His second studio album and major-label debut, "Ocean Eyes", was released in July 2009. "
Fireflies", the album's lead single, became an international success, peaking at number one on the US "Billboard" Hot 100 and becoming a top ten hit in several other countries.
 Fueled by success of "Fireflies", "Ocean Eyes" peaked at number eight on the US "Billboard" 200 and was later certified platinum by the Recording Industry Association of America (RIAA).
 An additional three singles were released from the album: "Vanilla Twilight", "Hello Seattle" and "Umbrella Beach".
Beautiful Eyes is the second extended play (EP) by American singer-songwriter Taylor Swift.
 The EP was released on July 15, 2008 by Big Machine Records exclusively to Walmart stores in the United States and online.
 The limited release EP has a primarily country pop sound and features alternate versions of tracks from her debut album, "Taylor Swift" (2006), and two original tracks, "Beautiful Eyes" and "I Heart ?"
, songs which she had previously written; a DVD, featuring music videos of singles from "Taylor Swift", is also included on the physical release of the EP.
New Look were a Canadian electronic music duo consisting of husband and wife, Adam Pavao and Sarah Ruba.
 The band released their first EP 'How's My Hair?'
 in 2008.
 Their debut album 'New Look' was recorded in Berlin and released on the record label !
K7 on October 10, 2011.
 It has received critical acclamation from both The Guardian and Vogue.
 The couple split their time between Toronto, Canada where they have a house and studio, and New York City where Ruba works part-time as a model.
 In 2010, the band toured with English indie pop band The xx.
Taylor Swift is the debut studio album by American singer-songwriter Taylor Swift, released on October 24, 2006, by Big Machine Records.
 Swift was 16 years old at the time of the album's release and wrote its songs during her freshman year of high school.
 Swift has writing credits on all of the album's songs, including those co-written with Liz Rose.
 Swift experimented with several producers, ultimately choosing Nathan Chapman, who had produced her demo album.
 Musically, the album is country music styled, and lyrically it speaks of romantic relationships, a couple of which Swift wrote from observing relationships before being in one.
 Lyrics also touch on Swift's personal struggles in high school.
American band Ivy has released six studio albums, one extended play (EP), fifteen singles, one promotional single, and eight music videos.
 After signing to Seed Records, Ivy released their debut EP, "Lately", in May 1994.
 Their debut studio album "Realistic" was released in February 1995 and produced the singles "Get Enough" and "Don't Believe a Word", along with "Beautiful", which was issued as a promotional single.
 In 1995, a music video for "I Hate December", a song from "Lately", was filmed and released.
 The song was then distributed as a single in January 1996.
 Ivy eventually left Seed and signed to Atlantic Records to record their second album "Apartment Life", released in October 1997.
 To promote the album, "The Best Thing", "I've Got a Feeling", "This Is the Day", and "You Don't Know Anything" were made available as singles.
 Their third album "Long Distance" was released in Japan in 2000, and the next year in the United States.
 Three singles were promoted, including "Edge of the Ocean" which peaked at number 160 on the UK Singles Chart, marking their only appearance on that chart.
"Born to Try" is a song by Australian recording artist and songwriter Delta Goodrem, written by Audius Mtawarira and produced by Ric Wake for her debut studio album "Innocent Eyes" (2003).
 The song was released as the first single off the studio album on 8 November 2002 by Epic Records and Daylight Records.
 It was later featured on her first Japanese compilation album "Innocent Eyes" (2006).
 The song was co-written by her while she was staying at her home in Sydney, Australia for the production of the studio album, as well as written and producing four other songs together.
 Though many of the public consider this as Goodrem's breakthrough single, it is not her debut single.
American singer-songwriter Taylor Swift has released four video albums and has appeared in thirty-eight music videos, five films and three television shows.
 From her eponymous debut album (2006), she released music videos for the singles "Tim McGraw", "Teardrops on My Guitar", "Our Song", and "Picture to Burn", all directed by Trey Fanjoy and released from 2006–08.
 For the second of these, she earned an MTV Video Music Award for Best New Artist nomination.
 She followed with three other music videos in 2008—"Beautiful Eyes" from her extended play of the same name, "Change" from the "AT&T Team USA Soundtrack" and "Love Story" from her second album "Fearless" (2008).
 The latter was nominated for two awards at the 2009 CMT Music Awards—Video of the Year and Female Video of the Year.
 For the video of "You Belong with Me" she won Best Female Video at the 2009 MTV Video Music Awards.
 During her acceptance speech, she was interrupted by rapper Kanye West, which sparked controversy and received much media attention.
The discography of American recording artist Marcella Detroit consists of seven studio albums, two compilation albums, sixteen singles (including three as a featured artist), and ten other appearances.
 Detroit released her debut studio album "Marcella" in 1982 under her birth name Marcy Levy, which went largely unnoticed.
 She became a member of pop group Shakespears Sister in 1989, who released two studio albums in her time with the band, the second, "Hormonally Yours", peaked at #3 on the UK Albums Chart, and was certified double platinum by the BPI.
 After leaving the band in 1993, Detroit released her second studio album "Jewel" in March 1994, which peaked at #15 on the UK Albums Charts, and was certified silver.
 The album's lead single, "I Believe", peaked at #11 in the UK, and reached the top ten in Australia.
 Her following album "Feeler", released in September 1996, was less successful, although it reached #82 in Japan.
 A live album, "Without Medication Plus MTV "Buzz Live"" was released promotionally in Japan the same year.
 Detroit's first EP, "Abfab Songs", was released in 1999, consisting entirely of original songs featured on "Absolutely Fabulous" in 1996, when Detroit guest-starred in two episodes as an angel.
 The same year, she released "Demoz", a double-CD collection of demos through her website.
 Her fourth studio album "Dancing Madly Sideways" was released in the same fashion, and thus did not chart in any territories.
American hip hop recording artist Ty Dolla $ign has released one studio album, two extended plays (EP), seven mixtapes and 41 singles (including 25 as a featured artist).
 In May 2011, Ty Dolla $ign released his first mixtape, "House on the Hill", which includes his debut single "All Stars" featuring Joe Moses.
 After releasing a few more mixtapes throughout 2011 and 2012, Ty Dolla $ign signed a recording contract with Wiz Khalifa's record label Taylor Gang.
 In January 2014, he released his major label debut "Beach House EP", via Taylor Gang Records and Atlantic Records.
 The EP includes hit singles "Paranoid" and "Or Nah".
 Ty Dolla $ign released his debut studio album, "Free TC" on November 13, 2015.
 The album includes the hit singles "Blasé", "Saved" and "Wavy".