Dorthea Lauren Allegra Lapkus (born September 6, 1985) is an American actress and comedian who portrayed Dee Dee in the NBC sitcom Are You There, Chelsea? and Susan Fischer in the Netflix original series Orange Is the New Black. She has also made appearances on such television shows as Jimmy Kimmel Live!, The Middle, Hot in Cleveland, and @midnight. She has appeared on many podcasts, including Comedy Bang! Bang!, improv4humans, and her own podcast With Special Guest Lauren Lapkus. She was a main cast member on the TBS original sitcom Clipped.