Pop star Justin Bieber poses for photos prior to a press conference at a hotel in Mexico City.
At a news conference before the concert, the teen star said there is no artist he would spend days in line waiting for.
"There is no one I admire so much to do something crazy, but if Michael Jackson were here, I would do it for him. So, I do understand the emotion that the girls feel and that makes me feel very honored," Bieber said.
Credit: AP Photo/Alexandre Meneghini