Jessica Ellen Cornish (born 27 March 1988), better known by her stage name Jessie J, is an British 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. In 2011 she confirmed that she is openly bisexual.
Her debut single "Do It Like a Dude" was followed up by "Price Tag".