The McGuire Sisters were a singing trio in American popular music.
The group was composed of three sisters:
Ruby Christine McGuire (July 30, 1926 – December 28, 2018)
Dorothy "Dottie" McGuire (February 13, 1928 – September 7, 2012)
Phyllis McGuire (born February 14, 1931)Among their most popular songs are "Sincerely" and "Sugartime", both number-one hits.