If you happened to be walking around Manhattan early this evening and heard a deafening roar of coordinated, high-pitched screams, don't worry. That's just the noise that follows Nick Jonas and Hailee Steinfeld. The singers/actors stopped by the famous Herald Square Macy's in New York City to announce the lineup for Z100's NYC Jingle Ball tour date, set for Dec. 11 at Madison Square Garden. During the event, Z100 DJ MoBounce chatted with both Jonas and Steinfeld onstage about what it's like to perform in front of a huge audience. When directly asked whether or not he used that particular protective measure in case his nerves got the best of him when he previously played the venue with the Jonas Brothers, the singer said, "I didn't wear a diaper."