Margot Robbie appeared in The Big Short, and director Adam McKay utilized the actress’ cameo to add a level of uniqueness and understanding to the movie. The 2015 biographical comedy-drama film chronicles the real-life events leading up to the 2007 housing market crash and how certain people benefited from the financial crisis. Aside from Robbie, the movie contained numerous big-name actors, including Christian Bale, Steve Carell, Ryan Gosling, Brad Pitt, Jeremy Strong, Marisa Tomei, John Magaro, and Finn Wittrock.

https://screenrant.com/the-big-short-margot-robbie-cameo-explained/