Jim and Rihanna were on a panel at a screening and Q&A for new Dremworks Animations movie Home on Wednesday night (19 November).
Jim, who plays hilarious theoretical physicist Sheldon Cooper in comedy series TBBT, told fans that songstress Rihanna was giving him a much-needed "tutorial" on capturing the perfect selfie.
Of course, Rihanna is no stranger to a selfie, and over the years the popstar has documented her life with some funny and rather saucy snaps - her Instagram and Twitter accounts are full of it!
Captioning a photo showing Jim paying close attention to Rihanna's camera tips, he said: "Oh na na, what's my name? #selfieTutorial with @badgalriri."
Jim and Rihanna are yet to share the actual selfie with fans, but maybe they just took so many that they couldn't decide?!
Rihanna and Jim provide voiceovers in Home alongside Steve Martin and Jennifer Lopez. The film is scheduled to be released in March 2015.
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