The 'Domino' singer gained three contestants in her group on Saturday night, with Jessica Hammond, Ben Kelly and Toni Warne all picking her after she turned around during their auditions.
Speaking to the Radio Times, 23-year-old Jessie revealed: "I am the only girl, but I am hardcore.
"I’ve only been in the industry for 12 months and I know how much criticism they are going to get, so I want to prepare them. I’m all about tough love."
Asked why she signed up for the new BBC One series, Jessie added: "It represents everything I am about.
"I have come up in the industry at a time when it is all about image, make-up and who you’re dating, but I want to play a part in breaking that down. "