Game of Thrones star Maisie Williams belts out Frozen's Let it Go in a charming new Audi commercial slated to run during the Superbowl. Williams, now 22 years old starred as Arya Stark in HBO's groundbreaking show, but has remained largely out of sight since it's conclusion. Fans of hers know she's an outspoken proponent for action surrounding climate change. The new all-electric Audi etron models are the company's latest answer to a more sustainable automotive industry.