Tinsley Mortimer gets closetfuls of swag in return for being a walking billboard for fashion labels like Dior and Samantha Thavasa, but recently she’s been shilling for someone a bit less glamorous: her dentist, Steven Butensky. The New York socialite has sent a letter to acquaintances singing his praises. “He so generously wants to give my friends a 25 percent discount on teeth bleaching,” she writes. “I promise you will love him and you will love your new white smile!!” But in this case, Mortimer’s endorsement allegedly comes from the mere goodness of her heart—a rep for the dentist insists that the party princess doesn’t even take advantage of the same discount offered to her friends.