OK, so it's not really tinsel in Saoirse Ronan's hair, but the gold thread that hairstylist Adir Abergel wove throughout her hair had the same effect as the twinkly festive trimming. "It was a double braid along the hairline that was pulled into a low-slung ponytail," Abergel explained of the style. "To accent the look, I used a gold thread that I found at a fabric store in London and intertwined into the braid. This created more dimension and added both texture and shine."