PICTURE EXCLUSIVE: Kristen Stewart transforms into Princess Diana as she sports her signature blonde bob and a pink plaid coat on set of movie Spencer in Germany
Spencer follows the breakdown of her high-profile, 15-year marriage to Prince Charles and is primarily being filmed at the Schloss Marquardt in Potsdam
The German castle is doubling as Sandringham Estate for the duration of filming the forthcoming drama
The story is said to take place over three days during one of Diana's final Christmases at the House of Windsor in their Sandringham estate in Norfolk
The script, written by English screenwriter Steven Knight, follows the moments Diana realised she 'needed to veer from a path that put her in line to be queen'