(Photo: Sven Hoogerhuis/PictureGroup)

There could be a major collaboration on stage in Australia if the media speculation is correct. Numerous websites are reporting that R&B star Chris Brown could be the "surprise" that pop phenom Justin Bieber is planning.
"Australia...we are coming...and there may be some surprises. LEGGO!!" Bieber tweeted, before attaching a video of "Next 2 U," the song that features Chris Brown.
Both artists have tour dates scheduled in Australia this week, so the collaboration is likely since the two will be in the same country.