Marietta Sirleaf[1] (born April 12, 1970), better known simply as Retta, is an American stand-up comedian and actress. She is mainly known for her role as Donna Meagle on NBC's Parks and Recreation. She has appeared in several films and television shows, and has performed stand-up on Comedy Central's Premium Blend. She currently stars as Barbara in Bravo's Girlfriends' Guide to Divorce.