Telma Louise Hopkins (born October 28, 1948) is an American singer and actress. A member of the 1970s pop group Tony Orlando and Dawn, she later starred in several television sitcoms, including Bosom Buddies, Getting By and Half & Half. Hopkins is best known for her roles as Adelaide "Addy" Wilson on the NBC's Gimme a Break! (1984–1987) alongside Nell Carter, and as Rachel Baines-Crawford on ABC/CBS sitcom Family Matters (1989–1997). She currently has a semi-regular role as Marilyn Persons in the TBS series Are We There Yet?, and also appears on the FX sitcom Partners as Ruth Jackson, mother to Marcus Jackson (Martin Lawrence), and has had a recurring role on Disney XD's Lab Rats as Rose.