The Backstreet Boys are extending their upcoming residency at Las Vegas’ Sphere. On Monday morning (Feb. 24) the boys-to-man band announced the addition of shows on August 15, 16 and 17, bringing the total amount of announced residency gigs so far to 18.

The Backstreet Boys will play a nine-show residency at the Sphere in Las Vegas this July, becoming the first pop music act to play at the orb-shaped venue.

The Backstreet Boys will be heading to Las Vegas for a summer residency at The Sphere, here's how to get tickets.

Due to overwhelming demand, the Backstreet Boys are adding three new dates to their highly anticipated summer residency, “Into The Millennium” at Sphere in Las Vegas on August 15, 16 and 17, bringing the total number of shows to 18.

This is the third three-show addition since the residency was announced Feb. 12. The Monday announcement was a mini-performance. BSB members Howie Dorough, A.J. McLean, Kevin Richardson, Nick Carter and Brian Littrell sang a segment of “Don’t Wanna Lose You Now,

The Backstreet Boys have added more shows to their Las Vegas Sphere residency, extending the tour into mid-August, and are celebrating the 25th anniversary of their hit album "Millennium"