Rihanna Emma Watson Pictures on End of the World Set

Rihanna and Emma Watson reported to the set of The End of the World, Seth Rogen's directorial debut, last night in New Orleans. The girls were busy shooting an outdoor party scene along with many of their hilarious male costars, including Seth's Freaks and Geeks buddies Jason Segel and James Franco. Aziz Ansari, Michael Cera, and Jonah Hill also got in on the fun, as did Paul Rudd and Mindy Kaling. The plot of the film involves the literal end of the world, which takes place during a celebrity-filled party at James's house. Rihanna, Emma, and company are all playing themselves.

Rihanna seemed to have a particularly good time with costar Kevin Hart. After they wrapped for the day, she tweeted, "Just leaving set! Kevin Hart clearly has childhood issues! . . . This has to be one of my favorite moments in life." Emma echoed the sentiments of having had a fun day. She wrote on Twitter, "Comedy is brutal . . . New Orleans is the best!" Emma will trade Louisiana, though, for California in the coming days. She's due in LA Sunday to attend this year's MTV Movie Awards.