Like many Hollywood celebrities, triple threat Debbie Reynolds had a Las Vegas era. Hers began in 1962, when she moved here (in part to escape her bruising divorce from Eddie Fisher, who was having an affair with Elizabeth Taylor) for a residency at the Riviera Hotel and Casino. The move also gave Reynolds time to regroup with her children. The exhibition The Persona. The Person: Debbie Reynolds in Las Vegas explores both the public and private sides of the star’s sojourn in the city of second chances. The Grand Gallery is open Mon.-Thurs. 9a-5p. The exhibit runs through Oct. 26.