Christina Aguilera kicked off her new Las Vegas residency last week (December 30), playing a career-spanning set with elaborate production.The residency, titled ‘A Truly Modern Twist’, is taking place at Volatire at The Venetian and marks Aguilera’s third stretch of shows in Vegas. The Grammy Award-winning singer previously took over the Zappos Theater in a residency that spanned from May 2019 to March 2020.Aguilera had previously said when the shows were announced that she wanted to bring “a new show that fuses music, sophistication and art in ways I have never performed before,” add that “what I love about the intimacy at Voltaire at The Venetian Resort is how up-close-and-personal I can be with the audience … a truly modern twist on the performance experience.”Meanwhile, Aguilera notably incorporated a portion of the Bree Runway song ‘That Girl’ into her performance of ‘Glam’, which Runway was particularly delighted by.Sharing a video of the moment to social media, Runway wrote: ““THAT GIRLLLL!!!!! IN YOUR SET?!?! get me on a flight to vegas NOWWWWW!!!!!!” Runway captioned.