While Brie Larson has long been recognized as a very strong talent–by those who saw Short Term 12 in specific–Room really allows her to show the true extent of her acting chops. Not only did Larson absorb the physical challenges of portraying a woman abducted and held captive in a confined space for many years (and filming in that tiny space),but she also had to get the then eight year-extinct Jacob Tremblay into her right-hand man. Tremblay plays Jack, the son of Larson's…
Source: deadline.com