December 01, 2012 - 1:00 AM
LAS VEGAS, Nev. - A jubilant Shania Twain, her face beaming as brightly as the eye-catching golden jewelry draped around her neck and wrist, was breathlessly running down the spectacular elements of her Caesars Palace show that debuts Saturday night — Her first-ever onstage duet with her sister! A 13-piece band! Two live horses! — when she caught herself and momentarily stopped.