Heaviest, Lightest, and Tallest Twins

- The world’s heaviest twins with an aggregate weight of 12.58 kg (27 lbs 12 oz), were born to Mary Ann Haskin (USA) on February 20, 1924.

- The lowest combined birth weight for the surviving twins is 847 g (1 lbs 13.57 oz.), recorded fro Hiba and Rumaisa, born by Caesarean section to Mahajabeen Shaik (India) at Loyola University Medical Center, Maywood, Illinois, USA, on September 19, 2004. The lightest surviving triplets – Peyton, Jackson Blake Coffey, born on Caesarean at the University of Virginia Hospital, Charlottesville, Virginia, USA, in 1998 – had a combined weight of 1, 385 g (3 lb 0.8 oz.).

- The tallest female twins are Ann and Claire Recht (USA February 9, 1988), who, on January 10, 2007, were both found to have an average overall height of 2.01 m (6 ft 7 in).

- The tallest male twins are Michael and James Lanier (USA November 27, 1969), who both have an average overall height of 2.23 m (7 ft 3 in).