Lady Gaga"KISS the Queen," Lady Gaga tweeted after meeting up with legendary rock band KISS this weekend. The pop star, who just overtook Britney Spears as the most followed person on Twitter, mugged for the cameras backstage with the group and likely exchanged makeup tips before heading out into the crowd and rocking out with her boyfriend, Luc Carl. Luckily for us, an eagle-eyed concertgoer thought to snap some video of Gaga dancing along to 'Calling Dr. Love'.