And, truth to tell, her time in the business spanned nine decades.
You came to know her by that ever-present black bow in her hair.
As a child performer she had a successful singing career. But unlike many child performers, she survived early fame and just kept going and going and going -- long before the Energizer Bunny did the same.
She performed at the opening night of the Flamingo Hotel, which was built by Siegel. At her height of fame as a child singer, from late 1929 to 1934, she had her own radio show, made numerous records, and was featured in a number of Paramount films and shorts. She continued to appear in films through the mid-1930s, making shorts and one feature picture, International House (1933), with W.C. Fields for Paramount.
In the 1960–61 season, Rose Marie co-starred with Shirley Bonne, Elaine Stritch, Jack Weston, Raymond Bailey, and Stubby Kaye in the CBS sitcom My Sister Eileen. She played Bertha, a friend of the Sherwood sisters: Ruth, a magazine writer, played by Stritch, and Eileen, an aspiring actress, Bonne's role.
In the mid-1970s, she portrayed, in recurring fashion, Hilda, who brought fresh doughnuts, made coffee for the team, and provided some comic relief on the police drama S.W.A.T..
In the early 1990s, she had a recurring role as Frank Fontana's mother on the CBS sitcom Murphy Brown. She appeared as Roy Biggins's domineering mother, Eleanor "Bluto" Biggins, in an episode of the television series Wings. Rose Marie and Morey Amsterdam appeared together in an October 1993 episode of Herman's Head and guest-starred in a February 1996 episode of the NBC sitcom Caroline in the City, shortly before Amsterdam's death in October of that same year.
She appeared with the surviving Dick Van Dyke Show cast members in a 2004 reunion special. Rose Marie was especially close to actor Richard Deacon from that show and offered him the suits left behind when her husband died in 1964, as the two men were of similar height and built.
Rose Marie appeared opposite Phil Silvers in the Broadway show Top Banana in 1951.
From 1977 to 1985, Rose Marie co-starred with Rosemary Clooney, Helen O'Connell, and Margaret Whiting in the musical revue 4 Girls 4, which toured the United States and appeared on television several times.
She was the celebrity guest host of a comedy play, Grandmas Rock!, written by Gordon Durich. It was originally broadcast on radio in 2010 on KVTA and KKZZ, and rebroadcast on KVTA and KKZZ again in September 2012 in honor of National Grandparents Day.