Ji-yeon was born in Seoul, South Korea on June 7, 1993. She briefly attended Seoul Arts High School and Hyehwa Girls' High School. Ji-yeon was later quoted as confessing that while enrolled, she took courses erratically and often skipped class; eventually, she "gave up a normal high school life" although "misses being a high school girl sometimes" and forsook attending university due to her busy acting schedule and career.
Ji-yeon has expressed an interest in modeling. In 2008, when she was 15 years old, Ji-yeon was featured in several pictorials and advertisements for SMART with Korean boy band SHINee. She collaborated with Davichi and SeeYa on the digital single "Female Generation/Forever Love", which was released in May 2009, making her the first member of T-ara to appear in public. She appeared in SG Wannabe's music videos "Saranghae" and "My Love is Crying" from their 2009 album, Gift From SG WANNABE. Early on, the Korean media dubbed Ji-yeon "Little Kim Tae Hee" due to her close resemblance to Kim.
In 2008, she entered and won the Smart Model Contest. Subsequently, she auditioned at the Mnet Casting System and joined the company. T-ara debuted on July 29, 2009, when Ji-yeon was 16 years old; the majority of the members were in their early twenties. As of April 2011, she remains the youngest member of the group. Ji-yeon made an appearance on the highly-ranked KBS television show Master of Study as Na Hyun Jung, a heavily burdened love-struck high school girl who joins a special class consisting of five under-performing students who share the goal of being accepted to any of the 3 best Universities in South Korea, commonly referred to as the "SKY" Universities ( Cheonha-Dae in Korean). Ji-yeon played the lead character in Death Bell 2: Bloody Camp alongside with Yoon Si Yoon, which was released in July 2010.
- Name: 지연 / Ji Yeon
- Real name: 박지연 / Park Ji Yeon (Bak Ji Yun)
- Profession: Actress and singer
- Birthdate: 1993-Jun-07
- Height: 167cm
- Weight: 45kg
- Star sign: Gemini
- Blood type: AB
- Talent agency: Core Contents Media
- Instruments: Vocals
- Associated acts: T-ara
- Miss Ripley (MBC, 2011) cameo
- Jungle Fish 2 (KBS1, 2010)
- God of Study (KBS2, 2010)
- High Kick Through the Roof (MBC, 2009)
- Soul (MBC, 2009)
- Aeja's Older Sister, Minja (SBS, 2008)
- Death Bell 2 (2010)
- Jungle Fish 2 (2011)
- Gnemeo& Juliet (2011)
- Education: Hye Hwa Girls High School
- Hobbies: Sleeping and watching movies
- Specialties: Sports and Cooking
- Model during before debut. Modelled once with SHINee
- Starred in SG Wannabe's music videos for "Cry" and "My Baby"
- Collaborated with SeeYa and Davichi on a single called "Women's Generation", soundtrack for a Korean drama, Cinderella Man.
- 2009 Cinderella Man OST "Women's Generation"
- 2009 Cinderella Man OST "Forever Love"
- 2010 Master of Study OST "Rolling"
- 2010 "Jungle Fish 2 OST" "Little By Little"
- 2010 Coffee House OST Part 3. "Coffee Over Milk"
- 2012 Dream High 2 OST Part 4 "Superstar"
- 2012 Dream High 2 OST Part 7 "Together"
- 2012 Dream High 2 OST Part 8 "Day after Day"