We just can't get this cray cray contest outta our head!
The world was excited enough for Roc Nation's second annual post-Grammy benefit concert, and that's BEFORE we learned about their amazeballz surprise guest!
These lovely philanthropists are raising money for the Los Angeles Children's Hospital!
But wait, there's MORE!
Roc Nation is raffling off free tix to the epic event and… A one-on-one encounter with the Aussie Empress herself!!!
CLICK HERE for a chance to WIN!!!
Just don't forget to bring us as your plus one, LOLz!
[Image via Instagram.]