Jessica Jarrell is a singer and songwriter in California.

Interestingly, she has worked with Mike Judge on Office Space, King of the Hill, and Idiocracy:

http://imdb.com/name/nm0418945/

JJ is friends with Justin Bieber and Cody Simpson:

Jessica Jarrell is a pop and RnB singer, her nickname is JJ. She was born and raised in Diamond Bar, California and started her career in the spotlight as a child model. She starred in print ads for K-Mart, Mattel and American Girl and was too shy to act or perform until her friends dragged her to an audition for the school Christmas play. She ended up getting two parts and so began her love of performing on stage. Even though Jessica always loved singing she was way too shy! A family friend who had connections to recording studios in Los Angeles encouraged her to try to write her own songs and start singing. Soon she met music producer/writer Toby Gad who saw her talent and helped her write an entire album. Her very first gig was performing for President Obama at the White House Easter Egg Roll in 2009. Talk about starting big! In 2010, JJ toured all over the U.S. and Canada with her friend Justin Bieber on his "My World 2.0" tour, and as a 15-year-old recorded the songs "Armageddon", "Almost Love" and "Up and Running". Justin Bieber even tweeted about her on Twitter as his "mystery guest" vocalist on his song "Overboard" before his record release.

JJ's 2010 music video for "Almost Love" :

JJ's 2010 music video "Up and Running" :

More recently, in 2013 Jessica Jarrell covered Lorde's "Royals":

JJ has grown up a lot, and her best is yet to come.

Photos on this page are curated from Reddit and Imgur.

These photos are Jessica Jarrell at Justin Bieber's Believe in LA, December 2013:

JJ's most recent cover is Jhene Aiko, "Comfort Inn Ending" :

Jessica Jarrell is also featured in Leon Thomas' "Hello How Are You" :