Lady Gaga brought out an a-list star for a surprise performance that has fans ecstatic. Get the scoop on the 'Mother Queen' reveal, new music, their on-stage collaboration, and the incredible social media buzz.

By smashing together Lady Gaga, 'Stranger Things,' 'Love Is Blind' and 'Squid Game,' Tudum is designed as an ominbus fan event. But who does it serve?

The Live Event in L.A., plus Timothée Chalamet and Kylie Jenner and more. From New York to Los Angeles and everywhere in between, see what your favorite stars are up to.