"Just stopped 2 boys robbing a car," Kelly Tweeted. "all I said was 'oi' and they ran like the wind. I did not realise I was that scary!"
"WTF is going on tonight just stopped 2 boys with lacrosse sticks trying to push Gee-Wizz car on it's side what's wrong with London #police?" she added.
On Tuesday night, however, Kelly had some real trouble, hinting she nearly got into a fight at shi-shi restaurant Nobu.
"Really makes me sad that the staff at nobu allowed a man to try and fight me because I asked him to stop slamming his glass on the table!" she Tweeted.
The reality star later added that a member of Nobu's staff later called to sort everything out.
"just got off the phone with paul the G.M of Nobu what a gentleman he is! i really appreciate the fact he sorted everything out & apologized!" she wrote.
Related Content from AccessHollywood.com:
VIEW THE PHOTOS: Wild & Wicked: Hot Shots Of The Fiery Sharon Osbourne
VIEW THE PHOTOS: 'Dancing With The Stars' Season 9 Class Portraits
PLAY IT NOW: Lourdes & Kelly Osbourne Just Wanna Have Fun
Phoot by Getty Images