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HOLLYWOOD, CA - AUGUST 17: Demi Lovato receives the ultimate 23rd birthday gift from Madame Tussauds Hollywood: her own wax figure on August 17, 2015 in Hollywood, California. (Photo by Rachel Murray/Getty Images for Madame Tussauds Hollywood)

HOLLYWOOD, CA - AUGUST 17:  Demi Lovato receives the ultimate 23rd birthday gift from Madame Tussauds Hollywood: her own wax figure on August 17, 2015 in Hollywood, California.  (Photo by Rachel Murray/Getty Images for Madame Tussauds Hollywood)