Earlier this week, reports that Casey Cohen slept with Jay Z while he was married to Beyonce appeared in In Touch and a number of other tabloids.
Now, Cohen is firing back and demanding that those magazines apologize and print a retraction...or pay up big time.
TMZ has obtained a letter from Cohen's lawyer in which the hostess and former reality star denies ever having been intimate with Jay. She admits to having met him on more than one occasion, but only in a professional capacity.
Cohen's lawyer dismisses the allegations against his client as a "foul and phony mistress-rumor."
Cohen - who previously appeared on the Bravo reality series Princesses: Long Island - is currently a hostess at 1Oak, an NYC hot spot frequented by Jay, Beyonce, and other A-list VIPs.