Martha Chamberlain joined Pennsylvania Ballet as an Apprentice in the fall of 1989, and rose through the ranks to Principal Dancer. She retired from the company in 2011. Martha began designing costumes in the early 1990s and continued throughout her dancing career. Among the choreographers she has created work for are Christopher D’Amboise, Matthew Neenan, Jodie Gates, Claudia Schreier, Meredith Rainey, Jorma Elo, Darrell Moultrie, Helen Pickett, Brian Sanders, Nicolo Fonte, Tommie-Waheed Evans, Annabelle Lopez Ochoa, Gary W. Jeter II, and Sidra Bell. She is currently on the dance faculty and wardrobe supervisor in the dance department at the University of the Arts. She is founder of Chamberlain Goods, a dancewear company specializing in custom-made leotards, tights, and warm-ups.