Pics: Justin Bieber Rocks With Miley Cyrus and More at Madison Square Garden

Justin Bieber pumped up the crowd attending his sold-out concert at Madison Square Garden in New York with his A-list guests. He was joined by Miley Cyrus when singing one of "My World 2.0" songs "Overboard". Wearing matching black outfit, the two led people screaming loudly whenever they made any physical contact. Also appearing on stage as special guests are Bieber's mentor Usher, his