Rihanna 'warming up' for Coldplay
Rihanna and Coldplay will be sharing the stage at next month's Grammys.
The We Found Love singer, who had already been tipped to perform with the chart-topping band at next month's Brits, tweeted the news to her fans.
She wrote: "My friends Coldplay and I will be sharing the stage for this year's annual Grammy Awards - bonkers."
Rihanna added that the performance was "great news" and that she was in a "great mood".
The stars will perform their collaboration Princess Of China.
LL Cool J is to host the show, featuring performances from the Foo Fighters, Taylor Swift, Bruno Mars and Jason Aldean.
Kanye West is the frontrunner at this year's event with seven nominations, while Adele is up for six Grammys, including album, song and record of the year.
Foo Fighters and Bruno Mars also have six Grammy nominations each, including album of the year.