DENZER MAKES A MOVE: Mary Jane Denzer, who has been a fixture on Mamaroneck Avenue in White Plains, N.Y., for 19 years, is moving her namesake store into the Ritz-Carlton at 7 Renaissance Square in White Plains. The new 5,000-square-foot salon will open June 18. The boutique specializes in designer fashions and carries such collections as Andrew Gn, Badgley Mischka, Elie Saab, Giambattista Valli, Jenny Packham, Naeem Khan, Neil Bieff, Oscar de la Renta, Roland Mouret and Valentino. Among the amenities it offers are valet parking at the Ritz-Carlton and on-site alternations. Brand + Allen Architects in San Francisco designed the boutique.