Katy Perry: Grimes Concert with BFF Rihanna!

Katy Perry: Grimes Concert with BFF Rihanna!

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

The 29-year-old entertainer has been busy announcing new shows for The Prismatic World Tour!

PHOTOS: Check out the latest pics of Katy Perry

Katy has added second shows to major cities such as: Brooklyn, Washington D.C., Boston, Philadelphia, Toronto, Chicago, Houston, and Dallas!

If you haven’t already, be sure to pick up tickets to see Katy in concert in a city near you!

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Photos: SplashNewsOnline
Posted to: Katy Perry