Little by Little

Peggy Lee’s recording of the 1920s song “Little by Little” includes some words that do not appear in any other recording of this song that I’ve come across. The words in question are those that begin with “Little by little your sweet perfection” and go on to the end of the lyric. Does anyone know whether she wrote these words herself?

About an hour after I posted the first message in this thread, I found Vaughn de Leath’s 1920s recording of “Little by Little”. This recording uses the words I had hitherto encountered only in Peggy Lee’s recording. Apologies for not having done my research before posting.