Ariel Winter Workman is an American actress. She starred as Alex Dunphy in the ABC comedy series Modern Family, for which she and her co-stars won four consecutive Screen Actors Guild Awards for Outstanding Ensemble in a Comedy Series. She also voiced the titular character in the Disney Junior show Sofia the First, Gretchen in the Disney Channel and Disney XD show Phineas and Ferb and Penny Peterson in the 2014 animated film Mr. Peabody & Sherman.