Blue denim meets black tie and evening gown in a Mardi Gras-themed dinner and dance Feb. 21 at the Warren County Senior Center.The growing popularity of line dancing in Warren County will join with traditional ballroom dancing in the fundraising event presented by the non-profit Warren County CARES organization. The social dancing follows a grilled steak dinner starting at 6 p.m., according to information from the Senior Center.A volunteer humanitarian service group, “CARES” stands for Caring About Rural Elderly Society. Reservations, which are limited to 40 guests, may be made by calling 473-6559.