Demi Lovato's NY Fan Frenzy

Demi Lovato poses with fans while she waits outside her New York City hotel on Friday.

The 15-year-old singer’s tour mates, the Jonas Brothers, arrived in New York a day earlier for their appearance on Good Morning America on Friday morning.

Demi and the Jonas Brothers will be performing at Jones Beach in Wantagh, New York on Friday night. They then perform at Madison Square Garden for two consecutive days on Saturday and Sunday night.