Alexis Knapp is an American actress and singer who is best known for her role as Stacie Conrad in Pitch Perfect. She made her acting debut in Couples Retreat and some of her other popular works includes So Undercover, The Dorm and Urge. The actress has also appeared in TV shows like Look: The Series and Ground Floor. Alexis is also known for her philanthropic works, she raises funds to help Somaly Mam Foundation fight against sex trafficking.