Only megastars get their own Las Vegas residency.  Carrie Underwood is a certified country music megastar. The singer and multi-time Female Vocalist of the Year initially planned a 12-date residency at the Theatre at Resorts World Las Vegas dubbed the Reflection: The Las Vegas Residency. Underwood’s shows were originally scheduled for Dec. 1, 3, 4, 8, 10 and 11, 2021,...