Jessie J

Jessica Ellen Cornish (born 27 March 1988), better known by her stage name Jessie J, is an English singer and songwriter
She first saw fame when she began writing tracks for Justin Timberlake, Alicia Keys and Christina Aguilera
In February 2011, she won the prestigious Critic's Choice award at The BRIT Awards in 2011
She also wrote the song "Party in the U.S.A." for Miley Cyrus
She attended Colins Performing Arts
She was cast as an eleven year old in Andrew Lloyd Webber's West End production of Whistle Down the Wind
Educated at Mayfield High School in the London Borough of Redbridge, at age 16 she began studying at the BRIT School, and joined a girl group at the age of 17
Jessie J has an irregular heartbeat since the age of 11, and also suffered a minor stroke at the age of 18