- Known for her adult-sounding voice as a child, she began her career as "Baby Rose Marie" (a name suggested by Evelyn Nesbit), singing in nightclubs, in film shorts and on the radio until she reached adolescence.
- Her first singing performances came at the age of 3 when her neighbors heard her and entered her into a contest.
- Attended a convent school in New Jersey at the age of 12.
- Although her first regular TV role was in the 1960-61 sitcom My Sister Eileen, it was her role as comedy writer Sally Rogers on The Dick Van Dyke Show that brought her fame.
- When her husband, trumpeter Bobby Guy, died in 1964, she wore black for a year.
- Was well-known and loved as a regular on Hollywood Squares.
- Received a star on the Hollywood Walk of Fame in 2001.
- 1963, Emmy — Outstanding Performance in a Supporting Role by an Actress: Nominee
- 1966, Emmy — Outstanding Performance by an Actress in a Supporting Role in a Comedy: Nominee
- 1964, Emmy — Outstanding Performance in a Supporting Role by an Actress: Nominee
- Stella Gluszcak — Mother
- Georgiana Marie Guy — Daughter
- Frank Mazetta — Father
- Bobby Guy — Husband (deceased)