Marilyn McCoo is an American

United States

The United States of America is a federal constitutional republic comprising fifty states and a federal district...

 singer, actress, and television presenter, who is best known for being the lead female vocalist in the group The 5th Dimension, as well as hosting the 1980s music countdown series Solid Gold

Solid Gold (TV series)

Solid Gold is an American syndicated music television series that debuted on September 13, 1980. Like many other shows of its genre, such as American Bandstand, Solid Gold featured musical performances and various other elements such as music videos...

. She is the wife of singer Billy Davis, Jr.

Billy Davis, Jr.

Billy Davis, Jr. is an American musician, best known as a member of The 5th Dimension. Along with his wife, Marilyn McCoo, he had hit records during 1976 and 1977 with "I Hope We Get to Love in Time", "Your Love", and "You Don't Have to Be a Star "...

, the founder and co-member of The 5th Dimension, whom she married in 1969.
McCoo was born in Jersey City, New Jersey

Jersey City, New Jersey

Jersey City is the seat of Hudson County, New Jersey, United States.Part of the New York metropolitan area, Jersey City lies between the Hudson River and Upper New York Bay across from Lower Manhattan and the Hackensack River and Newark Bay...

 to Waymon and Mary McCoo, who were both doctors.