Jessica Jung's 25th Birthday: Girls Generation (SNSD) Member's B-Day Takes Over Twitter

If you've been lurking on Twiter recently, you may be wondering about the globally trending hashtag #Happy25thJessDay. In the name of maintaining an informed public, we dug deeper and discovered that the phrase that is blowing up Twitter refers to Jessica Jung, a singer in the group Girls' Generation (SNSD). Today, is her 25^th birthday.

The hashtag goes along with well wishes, pictures from fans and... talk of how the hashtag is globally trending (soooo meta, guys).

Here's a primer on Jessica Jung so that you can be fully prepared for the 25^th Jess Day.

Jung was born in San Francisco but moved to South Korea after being scouted by K-Pop behemoth S.M. Entertainment in a shopping mall.

She trained with her fellow Girls' Generation members for 7 years before being allowed to debut with the group.

She has modeled for Samsung, LG, and Domino's Pizza among others.

Her aliases include Sica, Jessi, Ice Princess, Dolphin and AhjumaSic.

Girl's Generation as a group is also known as SNSD.

Like many K-Pop supergroup members, she has a solo career that includes tracks like "Heart Road" and "Because Tears Are Overflowing." (This is no accident, K-Pop groups are designed to mix and match into different sized iterations including trios, 5-pieces and solo shows).

A sampling of tweets is below:

Happy birthday to SNSD Jessica!!! May all her wishes come true!!! Jessica hwaiting!!! #Happy25thJessDay twitter.com/RunningmanEng/...

— SBS Running Man 런닝맨(@RunningmanEng) April 17, 2013

Happy birthday US barbie girl, Jessica Jung from SNSD♥ #happy25thjessday twitter.com/Forever_Minho/... — Choi Minho (@Forever_Minho) April 17, 2013

cause blowing your cake with your mouth is too mainstream. #Happy25thjessday twitter.com/yulneck/status...

— yuridiot (@yulneck) April 17, 2013

What do you think of Jessica Jung's 25^th birthday and the spread of #Happy25thJessDay? Are you a Girls' Generation (SNSD) fan?

Sound off in the comments.