Jen Chia-Hsüan, more commonly credited as Selina, is a member of the Taiwanese girl group S.H.E. On June 11, 2004, she graduated from the National Taiwan Normal University with a Bachelor of Education degree, majoring in Civic Education and Leadership. In September 2006, Selina released her first book, Selina Loves Beading (愛的小珠珠), which taught readers how to use beads to make designs.
On August 8, 2000, HIM International Music held a 'Universal 2000 Talent and Beauty Girl Contest' in search for new artists to be signed under their label. Her younger sister (Kimi Jen) really wanted to join but she was too young. Instead, Selina joined the contest in her place. The contest had about 1000 contestants and after many tiring rounds of competing, seven contestants were left for the 'Cruel Stage' round. The three members of S.H.E were formed from here. Following the competition, the record company gave all seven contestants an audition. Selina Jen was the actual winner of this contest. She caught the judges' attention in the first round by singing Coco Lee's 'Before I Fall In Love' and entered the final round with no trouble with 'The Closest Stranger'. Selina Jen also sang "Reflection" by Christina Aguillera. Due to her nervousness during the final round, Selina was called out twice, and when she was announced the winner, she was doubtful because there were other contestants who had not been called out. However, all three future members of S.H.E were signed together under HIM International Music. The name "Selina" initially had two possible spellings: Selina and Selena. Jen Chia-Hsüan eventually chose "Selina" simply because she would be able to dot the i.
In 29 May 2010 at concert in Taipei Arena, Selina admitted to the media that lawyer, Richard Chong (张承中) is her boyfriend.
Selina's voice earned her duets with Tank, a soloist on HIM's roster (獨唱情歌 "Solo Love Song"), as well as Leehom Wang (你是我心内的一首歌 "You Are The Song Inside My Heart"). The collaboration with Lee-Hom was so successful that a rumour emerged claiming that Selina was seducing Lee-Hom. A crying Selina held a press conference to clear up the misunderstanding, as well as the rumour that Selina received a car from Huang Zi Jiao.
In her childhood, Selina hated dogs; however, after being introduced to Hebe Tian and Ella Chen of SHE, who both kept dogs, she started keeping her own dog as well. Her dog’s name, Pinky, reflects her colour preference for pink. Selina is 163 cm tall and she weighs 45 kg.
The name Selina was chosen by her company after taking a personality test; it represents “gentleness”.