A supposed industry insider blabbed to The Sun a few weeks ago about Riri's rumored appearance and why the producers were waiting until the eleventh hour to confirm, claiming she's finalizing album plans and wanted to get the Grammys out of the way. They said it was "highly unlikely" West or McCartney would join Riri at the BRIT awards, causing speculation she'd perform a new song.
Probably not "Towards The Sun."
As you can see above, The Sun is retracting the claim and says she's pulling out of the show. But for the record, she never confirmed any appearance/performance. So we're left with the utter shock a tabloid was wrong said no one ever.
Come on rude girl girl.