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