Britney Spears started her Las Vegas residency with a bang!
Tons of stars showed up for the pop star's debut week in Sin City and some of them even got some special shout outs during the show.
At one point during her Friday night show, Britney's backup dancers paid some extra special attention to Miley Cyrus, who was rocking out in the front row.
Then, when Lance Bass came to the show on Monday, Britney had a special something planned for him, too!
The former boy-bander sported a pair of cat ears as he was put on a leash and walked around the stage by the pop princess herself.
After the show, the two exchanged tweets and Lance posted pictures and videos from the performance, with one photo baring the caption "walk of shame."
Of course, a picture is worth a thousand words, but a video is worth so much more!
Check out the video below to see Lance on a leash!