Katy Perry & Rihanna Support Grimes at Pre-Grammys Event!

Katy Perry and Rihanna sandwich in up-and-coming singer Grimes backstage at her pre-Grammys concert held at the House of Blues on Friday (January 24) in Los Angeles.

The ladies have been friends for years and we love seeing them hanging out together! Perhaps they will move their seats at the Grammys tomorrow night so they can sit with each other?!

The next day, Rihanna hit the black carpet while attending a pre-Grammys brunch held at a private residence in Los Angeles.

FYI: Rihanna is wearing an Altuzarra top and skirt, Manolo Blahnik shoes, necklaces by Roseark and Jennifer Meyer, rings by Neil Lane and Roseark, and a Neil Lane bracelet at the brunch.

10+ pictures inside of Rihanna and Katy Perry at pre-Grammys events…