I once got --I want to say "a glimpse", but I mean the auditory equivalent of this --of a duet (women) singing

"I am exactly as I am, And not the way you'd like to see me be" -- and that's all I got. It was a very bouncy number, and I suspect it was the McGarrigle sisters, although I don't know all their albums (nor have access to them). Can anyone help me? What song, who sings it, and where is it available? You folks haven't failed me so far. Thanks so much. doug