While "Twilight" actress Nikki Reed's days as a vampire are coming to an end, she has plenty on her plate with her own jewelry line, a singing career and her new gig as an AXE ambassador. Reed, 24, plays vampire Rosalie Hale in the hit "Twilight" movies, alongside stars Robert Pattinson and Kristen Stewart. The last installment, "The Twilight Saga: Breaking Dawn - Part 2," is slated to be re…