Carrie Underwood has added six new dates to her Las Vegas residency after an incredible first night.SEE: Carrie Underwood is the ultimate showgirl as she pulls in the crowds ahead of Las Vegas showUniversal Music confirmed the news on Thursday, the morning after she launched the residency which saw her perform 18 songs across a high-energy 90 minutes. The six new show dates are going on sale to the public Monday, December 6 at 10 a.m. PST and run across May 2022.