Wearing blue skinny jeans, a cropped blazer and black boots, Emma was dressed fairly casual as she filmed scenes in New Orleans which included her running out of a house.
Rihanna, on the other hand, showed off a bit more flesh wearing tiny denim shorts, a cream off-the-shoulder jumper and matching Converse trainers.
The ladies were surrounded by several other female actresses and extras, but Emma only had eyes for Rihanna as they filmed the comedy.
The End Of World, which is set to be released next Summer, is an action comedy film where all participating are actually playing themselves.
The film also stars James Franco and Jonah Hill – who was seen on set alongside Seth and Emma.
The plot of the movie is said to revolve around everyone enjoying at Party at James’ house when the apocalypse suddenly breaks out.