Maiara and Maraisa were born on December 31 1987.
Robin (1949-2012) and Maurice (1949-2003) were twins.
They were born on June 16, 1994.
Born on 16 October 1991.
Sisters Potiara and Potiguara (their birth names) were born on July 6 1975.
Matt and Luke Goss are twins, born on September 29, 1968.
Jay (born John) and Michael Aston.
Members Choa and Way are twins, born on July 12, 1990.
Kim & Kelley Deal are identical twins.
Bill & Tom Kaulitz are twins.
Megan and Liz Mace were born on November 21, 1992.
Joel and Benji Madden are identical twins, born on March 11, 1979.