Christina Aguilera is one of the many artists showing it's cool to do shows in Las Vegas.
She said her residency is an "escape into a world where you don't have to be anything but yourself."
Aguilera also said, "This is a place where, for one night, take your mask off, put a different one on, be whoever you want to be. And it's a safe space."
One dollar from every ticket purchased to Christina's Las Vegas show will go to an emergency shelter in southern Nevada to help women and children in crisis.