Tamsin Egerton (born 26 November 1988) is a British actress and model, born in Hampshire, England. In 2007, Egerton was voted tenth of the one hundred most beautiful faces in the world, by Independent Critics.
She most recently starred in the British comedy Keeping Mum (2005) as Holly Goodfellow, a critically-acclaimed roll that sparked some controversy because Egerton was filmed topless at age 16. She later appeared as Sarah in Driving Lessons (2006). She was to appear as Katrina in Eragon, but the scenes which she featured in were removed from the final cut.
Egerton also starred as Princess Elenora in the TV children's series Sir Gadabout: The Worst Knight in the Land. In 2001, she starred as the "young" Morgaine in the TV mini series The Mists of Avalon.