It is a photo tweeted by co-star Garret Dillahunt, with the words:
Me and Lupita Nyong'o like to decompress at the end of the shooting day with a little mumblety-peg.
Lupita plays Patsey, a slave who is the object of both the affections and cruelty of Master Epps (Michael Fassbender).
Here is a list of the film's cast (as of today)
Chiwetel Ejiofor Brad Pitt Michael Fassbender Scoot McNairy Benedict Cumberbatch Paul Giamatti Paul Dano Sarah Paulson Garret Dillahunt Ruth Negga Taran Killam Adepero Oduye Alfre Woodard Lupita Nyong'o Michael K. Williams Chris Chalk Dwight Henry Looking forward to this film. Currently working on finishing the book.