But the former Girls Aloud star is not the only female star you may not have expected to smoke.
The Sin City actress reportedly turned to fags to ditch her pregnancy weight after giving birth to daughter Haven in 2011.
I have to brave it through the whole day on my own.
The mum-of-two, who recently wrote a healthy eating cookbook, admits she allows herself one cigarette per week.
The singer and actress has previously been snapped lighting up on nights out — but claims she is not a smoker.
Right now Katherine Justice is a famous Actress in the world.
Other versions of Batwoman have appeared in Batman: Mystery of the Batwoman and Batman: The Brave and the Bold.