Kelly Bensimon

Kelly Killoren Bensimon of Real Housewives of New York City was charged with misdemeanor assault after boyfriend Nicholas Stefanov told police she punched him in the face, People reports.

He said the attack occurred last Tuesday and left him with a cut below his left eye. Bensimon turned herself in on Thursday.

"Last week, Ms. Bensimon was charged with a misdemeanor and has entered a plea of not guilty. We are confident that the charges are unfounded and we look forward to a quick resolution," said her attorney, who added Bensimon and Stefanov were not together at the time of the reported fight.

Bensimon is due back in court March 31.