Who is the blonde actress in new milkshake commercial?

Elle Fanning is an American actress. She is the younger sister of actress Dakota Fanning. Fanning made her acting debut in the 2001 film "I Am Sam". She has since starred in a number of films, including "Maleficent", "The Beguiled", and "Teen Spirit". Fanning has also appeared in television series such as "The Mindy Project" and "The Great".