Sisters is a popular song written by Irving Berlin in 1954, best known from the 1954 film White Christmas.
The first edition of Vera-Ellen's biography by David Soren made the mistake of suggesting that "perhaps" Clooney sang for Vera in "Sisters".
The second edition of the biography corrected that error by adding this: "Appropriately, they sing ‘Sisters' with Rosemary Clooney actually dueting with Trudy Stabile (wife of popular bandleader Dick Stabile), who sang under the stage name Trudy Stevens and who had been personally recommended for the dubbing part by Clooney.
Originally, Gloria Wood was going to do Vera-Ellen's singing until Clooney intervened on behalf of her friend."
White Christmas also starred Bing Crosby and Danny Kaye.