Mary-Kate's Been Naughty At Fashion Week!

Bad news for nicotine lovers, Mary-Kate and Ashley Olsen.

It seems New York hot spots are starting to crack down on NYC’s no-smoking laws.

At the Harley Viera-Newton and Cassie Coane’s Fashion Week kickoff party at Marquee, the tiny Mary-Kate Olsen was spotted smoking inside.

Security had to ask MK to stop smoking. But once wasn’t enough as they had to ask her a second time.

Olsen, along with SaMAN Ronson and Kiki Drunkst were all forced to spend the night cigarette-free.

[Image via WENN.]