She stepped out in black bra and knickers, fishnet tights, teal jacket and sparkly shoes as she hit the West End with fellow X Factor contestant Johnny Robinson.
The 26-year-old - who has been compared to last year's controversial contestant Katie Waissel - couldn't resist taking to the microphone - no doubt to rehearse for this weekend's live show.
Both Johnny and Kitty were all smiles as they were spotted singing their hearts out in a nearby karaoke bar.
Looking tops with no bottoms ... Kitty Brucknell in club
Later the pair were seen laughing as they piled into a rickshaw.
Time to go home ... Kitty Brucknell and Johnny Robinson enjoy a rickshaw rideSplash News
But Kitty came very close to falling off as she stood up in the moving vehicle - and bared a lot of her behind in the skimpy outfit.
Making an exit ... Johnny Robinson and Kitty BrucknellXposure
She took to Twitter ahead of her evening out to tell fans what she had planned, tweeting: 'Going to Old Compton St tonight for a bit of fun with @jrmusicoffic :-)'
Baring all ... Kitty Brucknell's outfit left little to imagination as she left with Johnny RobinsonSplash News