How old is Jessie J?

Jessica Ellen Cornish, known professionally as Jessie J, is an English singer and songwriter. After signing with Republic Records, Jessie J came to prominence with the release of her debut single, "Do It like a Dude", which peaked at number two on the UK Singles Chart. Her following single, "Price Tag", was an international success, topping the charts in nineteen countries, including the UK. It was followed by the release of her debut album, Who You Are (2011), which peaked at number two in the UK. Other singles from the album included "Nobody's Perfect", "Who You Are", "Domino" and "Laserlight", all of which peaked within the top ten in the UK, making Jessie J the first British female artist to have six top-ten singles from a sole studio album.