LISA AND LENA MANTLER, twins from a village near Stuttgart, Germany, are the most famous 15-year-old girls you’ve likely never heard of, and they rose to fame on a social-media platform you’ve ...

Before he was a member of the Sway House — an L.A.-based, fratlike collective of steely jawed TikTokers who make ungodly amounts of money gyrating into their camera phones — Blake Gray was the ...