The movie portrays June Gibbons and Jennifer Gibbons as fraternal or "dizygotic" twins, "non-identical twins", "dissimilar twins" or "biovular twins"; Around two in three sets of twins are fraternal. Two separate eggs (ova) are fertilised by two separate sperm, resulting in fraternal or 'dizygotic' (two-cell) twins. These babies will be no more alike than siblings born at separate times. The babies can be either the same sex or different sexes. Or the 'third-twin type' may play its part here too; Some researchers believe there may be a third type of twin, although medical opinion is still divided. It is proposed that the egg splits in two, and each half is then fertilised by a different sperm. This theory is an attempt to explain why some fraternal twins look identical: June and Jennifer were identical twins.

At about 31 minutes the girls are asked for social security numbers. In the UK they have National Insurance numbers not SS numbers.

Featured in Amanda the Jedi Show: The Most Theatre Walkouts I've EVER Seen | Cannes 2022 Explained (2022)