Kate Middleton reportedly smoked to cope with her breakup with Prince William.

The couple split in 2007; Kate picked up the habit.

She was seen with cigarettes during a night out with her sister, Pippa.

Photos revealed a pack of cigarettes in her unzipped handbag.

The outing occurred a week after the breakup was announced.

The DailyMail noted Kate was usually cautious in public due to her future royal role.

She seemingly decided to shed her good-girl image at the time.

The Prince and Princess of Wales were together for five years before the breakup.

This information gives a rare peek into Kate’s personal coping mechanisms.