Chris Brown to join Justin Bieber on stage?

Justin Bieber fans might be up for a little more on-stage action than they originally thought.

Both Biebs and "Yeah 3 X" hitmaker Chris Brown are Down Under for tour and just recently Biebs Tweeted about a possible reunion to his followers.

"AUSTRALIA... we are coming... and there might be some surprises." He then posted a link to the pair's duet track "Next 2 You."

Do you think Brown will replace Jaden Smith for "Never Say Never"? We’d like to see that!