Popsugar Celebrity Celebrity Facts Who Is Jessie J? 6 Fascinating Facts About Channing Tatum's New Girlfriend, Jessie J 12 October 2018 by Monica Sisavat Solís View On One Page Photo 1 of 3 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 1 She's 30 years old. Jessie was born on March 27, 1988 and grew up in Seven Kings, England. Her real name isn't Jessie J. The singer may go by Jessie J, but her real name is actually Jessica Ellen Cornish. Previous Next Start Slideshow Celebrity FactsJessie J