Dawn Wells

Dawn Elberta Wells is an American actress who is best known for her role as Mary Ann Summers on the CBS sitcom Gilligans Island. She and Tina Louise are the last surviving cast members from that series, not counting the three original actors for The Professor, Ginger and Mary Ann in the unaired pilot.

Wells was born in Reno, Nevada, where she attended Reno High School. She later attended Stephens College in Columbia, Missouri, where she majored in chemistry. She transferred to the University of Washington in Seattle, where she graduated in 1960 with a degree in theater arts and design. She was a member of the Alpha Chi Omega sorority.

Source: Wikipedia