“My Sister Eileen is admittedly silly and light, but it’s […] not only charming but downright lovable. […] It also boasts a good deal of laughs […]. Russell is in supreme form, tossing off one-liners with scorchingly precise timing, […] and carrying the film as if it were the easiest thing in the world to turn in such a remarkable star turn. […], but it’s Russell that wins your heart and makes My Sister Eileen the kind of film you’re always glad to run across on TV.” Craig Butler: My Sister Eileen (Memento vom 3. Oktober 2021 im Internet Archive) bei AllMovie (englisch).