Miley Cyrus Checks Out Justin Bieber's Concert

Manned with a Sharpie in hand, Miley Cyrus heads out of Madison Square Garden in NYC after catching Justin Bieber’s concert in NYC on Tuesday evening (August 31).

The 17-year-old actress flew out especially for the concert, where Justin, 16, filmed part of his upcoming 3D movie which will be directed by Jon Chu.

Miley, who sipped on Icelandic Glacial water, joined a slew of special guests including Jaden Smith, Ludacris and Usher.

10+ pics inside of Miley Cyrus…