Singer was photographed with the star's official London at night
Jessie J has denied dating her bodyguard Justin Bieber and rated the rumors as completely liars.
The singer of "Domino" referred to rumors that surfaced after she was photographed in London on the arm of Kenny Hamilton, who described it on Twitter as his "favorite British girl" on Wednesday night (12).
"Oh, my God ... Some people invent anything," the star tweeted. "I get jokes about my life and it's all lies. Some people really need to get a job."
Hamilton has followed Bieber in London as the singer of "Boyfriend" promotes his book in the UK.
Released Thursday (13), Just Getting Started references the episode of false paternity and problems of the star with the paparazzi.
Recently announced that Jessie J will shave his head live in 2013 towards the charity Comic Relief.