Lady Gaga performs during her “Enigma” residency at Park Theater at Park MGM on December 28, 2018 in Las Vegas, Nevada. (Kevin Mazur/Getty Images for Park MGM Las Vegas)

Lady Gaga performs during her “Enigma” residency at Park Theater at Park MGM on December 28, 2018 in Las Vegas, Nevada. (Kevin Mazur/Getty Images for Park MGM Las Vegas)