Jessica Chastain Tweeted THIS video.

She is wearing the Oscar de la Renta Ruffled One-Shoulder Crepe Dress. Buy it here: BERGDORF GOODMAN, FARFETCH, MYTHERESA, NEIMAN MARCUS, OSCAR DE LA RENTA, and SAKS FIFTH AVENUE
Get the look for less here:
#JessicaChastain #yellowdress #oneshoulderdress #OscardelaRenta