Look at Them Now: Justin Bieber and Chris Brown Throw it Down in Sydney!

The rumors of a surprise guest at Justin Bieber's Sydney, Australia concert this weekend proved true, as the 17-year-old welcomed Chris Brown on stage.

JB, who is constantly spreading his alleged rags-to-riches story in order to encourage fans to live their dreams, described the team effort on Facebook:

“3 years ago I sang "WITH YOU" by Chris Brown in my living room,” Bieber said. “Since then thanks to the help of the fans we have been on an incredible journey. Thank you because we are just getting started. NEVER SAY NEVER.”

Here's Bieber and Brown teaming up on "Look at Me Now":

Justin Bieber and Chris Brown - Look at Me Now (Live)

While some question his decision to collaborate with Brown, given Justin's squeaky clean image and Chris' troubled past, the Bieb has stuck by his boy.

Fortunately, no one egged Bieber on stage as a result.