The Big Selfie Theory! Rihanna gives co-star Jim Parsons a lesson in taking pictures as they promote their new animated movie

She's known for being able to take some of the most stunning pictures in the world.
And Rihanna was clearly keen to share her knowledge with her co-star Jim Parsons, as the two promoted their new animated movie Home together on Good Morning America.
The actor, who is best known for his role as Sheldon Cooper in comedy series The Big Bang Theory, looked to be having a whale of a time as he sat next to his glamorous colleague.
More photos of the after the cut.

Jim compared his selfie with Rihanna to their animated alter-egos in their new movie Home, in which he stars as alien Oh and the singer as Tip