Jessica Sooyoun Jung, born April 18, 1989 and known professionally as Jessica, is an American singer and actress known for her work as a former member of the South Korean girl group Girls' Generation.

Jessica is from San Francisco. While on vacation in South Korea, she and her sister, Krystal, were spotted in a shopping mall by a member of SM Entertainment; she later joined the company in 2000.

She spent seven years as a trainee before debuting as part of the Korean girl group Girls' Generation.

On September 30, 2014, Jessica announced on her personal Weibo account that she had been “forced out” of the group. SM Entertainment later confirmed this, stating that Jung would no longer be a member of Girls' Generation due to continuing scheduling conflicts. The company also stated that Girls' Generation would continue to promote with eight members while it would still manage her solo activities.

Jessica also released a statement of her own through her fashion company, Blanc Group, explaining that she had been asked to leave Girls' Generation by the agency and the other members of the group.

Jessica’s final song with Girls' Generation was “Divine,” which was included in the repackaged version of their Japanese greatest hits album, The Best.

Jessica made her solo singing debut, under Coridel Entertainment, with the lead single, “Fly” featuring Fabulous and released her first solo album, With love, J in May 2016.

On December 9, 2016, Jessica released her third solo single, “Wonderland” with an accompanying music video and her second album also named Wonderland.

In August 2017, Jessica released the single “Summer Storm”, on her tenth anniversary as a singer.

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