The country star performs "Achy Breaky Heart" live and shares his thoughts about Miley & Noah's success.
Castmates including KJ Apa, Cole Sprouse, Lili Reinhart, & more play "Riverdale Rapid Fire".
Chester Bennington, Mike Shinoda, and Brad Delson discuss their most emotional songs.
Olympic gymnast and pro partner Sasha Farber rehearse their next "Dancing with the Stars" routine.
YOUNG HOLLYWOOD TV
Mars explains, "I was called Peter at school but at home I was never called that. I was Bruno. My dad was a fan of the wrestler Bruno Sammartino, who was heavyset. When I was a kid I was a little pudgy. I reminded him of a wrestler."