Vanessa Nuala Kirby is an English actress. She made her professional acting debut on stage, with acclaimed performances in the plays All My Sons, A Midsummer Night's Dream, Women Beware Women, Three Sisters, and as Stella Kowalski in A Streetcar Named Desire. Kirby rose to international prominence with her portrayal of Princess Margaret in the Netflix drama series The Crown, for which she won the British Academy Television Award for Best Supporting Actress.